Timeline of events in Pokémon Horizons: The Series

Spoiler warning: this article may contain major plot or ending details.

In Pokémon Horizons: The Series, a beginner Trainer named Liko from the Paldea region starts her Pokémon journey, which leads her to joining a group of adventurers called the Rising Volt Tacklers, make new friends in an enthusiastic boy named Roy and a socially awkward internet streamer named Dot, and getting in the radar of the ominous Explorers organization. When Liko's mysterious pendant reveals a mysterious Pokémon called Terapagos and Roy's Ancient Poké Ball unexpectedly releases from within itself a Black Rayquaza, the two young Trainers become inspired to solve mysteries behind them and learn more about the ancient adventurer that shares a connection with both of these Pokémon, Lucius. Traveling around the world in search for answers, the junior members of the Rising Volt Tacklers become closer and closer as friends and set out to master the Paldean phenomenon known as Terastallization to aid them in their ultimate goals.

Timeline

Pre-series

The order of many of these events is approximated and debatable.

Time	Details
???	Heath leads an expedition into Area Zero within the Great Crater of Paldea, where he discovers a Pokémon that he names Terapagos. (HZ071) Heath publishes his discoveries in the Scarlet Book, but they are largely discredited. (HZ071)
100 years prior	Lucius, inspired by Heath's writings, sets out to find the mythical paradise known as Laqua. (HZ075) Lucius encounters Rystal, a young woman accompanied by a Terapagos nicknamed "Pagogo", who joins him on his journey. (HZ075) Lucius captures an Arboliva, a Galarian Moltres, a Lapras, a Kleavor, and an Entei, which, alongside his Shiny Rayquaza, become known as the Six Heroes. (HZ075) Lucius and Rystal meet a man named Gibeon, who joins then on their adventure. (HZ075) Lucius, Rystal, and Gibeon's group, calling themselves the Explorers, discover Laqua and the substance called Laquium. (HZ075) Gibeon's mishandling of the Laquium starts devastating Laqua, forcing Pagogo to seal it away, with Lucius getting sealed along with it. (HZ075) Pagogo falls into a dormant state and Lucius's Pokémon are scattered across the world. (HZ075)
???	Leila is born. Rystal passes away. (HZ075) Gibeon reestablishes the Explorers as a villainous organization aiming to return to Laqua. Diana is born. Diana discovers Pagogo's dormant pendant form in Leila's attic. Unaware of its true nature, she becomes an adventurer and starts searching the world for answers about Lucius. (HZ024) Diana is joined on her adventures by Tepen and Hamber, who both eventually leave her. (HZ028 & HZ074) Roy's grandfather discovers an Ancient Poké Ball, but is unable to open it. (HZ004)
30 years prior	Diana gives up on her quest to solve the pendant's mysteries, but still continues her adventures. (HZ024)
???	Lucca is born. Lucca and Alex study at and graduate from Indigo Academy. (HZ001) Friede studies under Lucca and later becomes a Pokémon Professor. (HZ018) Amethio is born and becomes a member of the Explorers. Liko is born. Roy is born. Dot is born. Lucca and Alex get married and move from Kanto to Paldea. (HZ018) Roy is left in the care of his grandfather when his parents leave for a long sea voyage. (HZ062) Roy receives the Ancient Poké Ball found by his grandfather as a gift. (HZ006) Friede quits his job at the Paldean company Exceed. (HZ018) Friede establishes the Rising Volt Tacklers with Orla and Ludlow. (HZ018) Murdock quits his bakery job following an argument with his business partner Mitchell. (HZ019) Murdock, Mollie, and Sohdayo join the Rising Volt Tacklers. Sohdayo leaves the Rising Volt Tacklers to become a journalist for the Occulture magazine. (HZ076) Dot joins the Rising Volt Tacklers (HZ041) Diana passes her pendant on to Liko as a good-luck charm. (HZ001) Dot establishes herself as a successful internet celebrity called Nidothing. A Sprigatito raised by Marnya accidentally injures some of her friends, becoming reluctant to use her full power as a result. (HZ040) Sprigatito is sent to Indigo Academy to be given out as a first partner Pokémon. (HZ040)
One year prior	Diana is approached by Hamber. Realizing he is associated with a villainous organization that's after Liko's pendant, Diana has Lucca hire the Rising Volt Tacklers to protect her granddaughter. (HZ024 & HZ074) Diana hides out in an ancient castle in Galar to await for Liko's arrival. (HZ024)

Pokémon Horizons: The Series

These events are listed in chronological order as opposed to solely release order.

Episode	Details
The Pendant That Starts It All (Part One)	Liko, a beginner Trainer from Paldea, enrolls in Indigo Academy in Kanto and meets Ann, a fellow student. Ann chooses Oshawott as her first partner Pokémon Liko receives a Pokédex for her Rotom Phone and a Sprigatito as her first partner Pokémon. Liko has her first Pokémon battle with Ann, which gets called off. Liko meets Amethio and gets on the radar of the mysterious Explorers organization. Liko meets Friede for the first time.
The Pendant That Starts It All (Part Two)	A mysterious Pokémon briefly appears from Liko's pendant. Amethio is revealed to own a Corviknight. Liko is introduced to the Rising Volt Tacklers. Murdock is revealed to own a Rockruff. Friede is revealed to own a Pikachu nicknamed Captain Pikachu. Amethio kidnaps Liko's Sprigatito.
For Sure! 'Cause Sprigatito's with Me!	Orla is revealed to own a Metagross and an Elekid. Mollie is revealed to own a Chansey. Liko and Friede free Sprigatito from the Explorers' captivity. Liko joins the Rising Volt Tacklers. The Rising Volt Tacklers head for Paldea.
The Treasure After the Storm!	Murdock is revealed to own an Alcremie. Liko meets Roy for the first time. Roy strikes up a friendship with the Fuecoco that travels with the Rising Volt Tacklers. Liko learns that Friede is a Pokémon Professor.
Found You, Fuecoco!	The Rising Volt Tacklers and the Explorers begin a new confrontation in Roy's hometown. Roy encounters the Explorers for the first time. Onia is revealed to own a Golduck. Fuecoco learns Ember.
The Ancient Poké Ball	Roy's Ancient Poké Ball opens to reveal a Shiny Rayquaza, which flies away. Roy catches Fuecoco, making it his first Pokémon. Roy joins the Rising Volt Tacklers. Gibeon removes Amethio from the mission to obtain Liko's pendant and assigns it to Spinel instead.
Special Training with Cap!	Roy receives a Pokédex for his Rotom Phone from Friede. Nidothing is secretly revealed to be Dot, a member of the Rising Volt Tacklers. Roy's Fuecoco is revealed to know Tackle. Liko's Sprigatito is revealed to know Scratch and learns Quick Attack.
The Door That Never Opens	Liko tries to befriend Dot. The Rising Volt Tacklers arrive in Paldea.
Welcome to Paldea!	Liko returns to Paldea, while Roy visits the region for the first time. Roy meets Alex, Liko's father, for the first time. Liko decides to head for Artazon with Roy to meet Brassius.
Nemona and Brassius and…	Liko and Roy meet Nemona, a Paldean Champion, and Artazon Gym Leader Brassius. Roy's Fuecoco learns Stomping Tantrum. Roy learns about the Terastal phenomenon, and he and Liko witness it for the first time. Roy has an unofficial battle with Brassius and loses.
Arboliva's Forest	Liko, Roy, and Mollie encounter a giant Arboliva with another Ancient Poké Ball.
The Future I Choose	Ludlow is revealed to own a Quagsire. The mysterious Pokémon briefly emerges from Liko's pendant again. The giant Arboliva goes inside the second Ancient Poké Ball and is taken under the care of Liko. Friede meets Lucca, Liko's mother. Liko and Roy learn more about the Ancient Adventurer, Lucius. The Rising Volt Tacklers decide to head for Galar. Spinel is revealed to be spying on the Rising Volt Tacklers and own a Magneton, an Umbreon, and a Beheeyem.
An Unexpected Picnic!	Roy encounters a wild Wattrel. Spinel begins his attack on the Brave Olivine.
Fly! Wattrel!!	Friede is revealed to own a Tera Orb. Friede's Charizard's Tera Type is revealed to be Dark. Roy catches the Wattrel he encountered. Spinel steals Liko's pendant.
Someone We Can't See! Whosawhatsit?	Liko and Roy see Dot in person for the first time. Liko and Roy meet Levincia Gym Leader Iono for the first time. The Rising Volt Tacklers set out to retrieve Liko's pendant from Spinel.
Quaxly, We Can Do It	Dot catches Quaxly, making him her first Pokémon. Roy's Wattrel is revealed to know Peck. Liko retrieves her pendant from Spinel. Liko's pendant activates and briefly summons Arboliva from its Ancient Poké Ball. The Rising Volt Tacklers begin heading to Galar. Dot reveals herself as Nidothing to Liko.
Special Training Time!	Roy's Wattrel learns Spark.
Flying Pikachu, Rising Higher and Higher!	Friede reveals how he met Captain Pikachu and formed the Rising Volt Tacklers. The Rising Volt Tacklers arrive in Galar.
The Bittersweet Truth	Liko and Roy visit Galar for the first time. Murdock's past is revealed. Liko and Roy meet Motostoke Gym Leader Kabu for the first time.
Kabu's Battle Training!	Roy's Fuecoco learns Flamethrower. Liko and Roy have an unofficial Tag Battle with Kabu, with Roy losing and Liko forfeiting. The Rising Volt Tacklers find out that the Black Rayquaza is at the Galar Mine.
The Lonely Hatenna	Ann is revealed to have caught a Sandshrew. Liko catches a Hatenna, making it her first caught Pokémon. Amethio, Zirc, and Onia arrive in Galar to search for the Black Rayquaza at the Galar Mine.
Charge! Galar Mine!	The Rising Volt Tacklers encounter Amethio and his cohorts again. Liko and Roy encounter Lucius's third Pokémon, a Galarian Moltres.
Fiery Galarian Moltres	Lucius's Galarian Moltres goes inside the third Ancient Poké Ball and is taken under Liko's care. The mysterious Pokémon emerges from Liko's pendant again, but does not change back.
Reunion at the Ancient Castle!	Sidian is revealed to own a Garganacl. Coral is revealed to own a Glalie. Hamber is revealed to own a Dusknoir. Roy and Friede meet Liko's grandmother, Diana, for the first time. The Rising Volt Tacklers learn that the mysterious Pokémon is called Terapagos. Amethio, Onia, and Zirc arrive at Diana's castle and prepare to attack the Rising Volt Tacklers.
Rivals in the Dark of Night!	Liko and Roy encounter Sidian and Coral for the first time. Diana starts traveling with the Rising Volt Tacklers. Diana reveals that Lucius's last three Pokémon are Lapras, Kleavor, and Entei.
Terapagos's Adventure	Liko receives Lucius's belt from Diana. The Rising Volt Tacklers set out to find the remaining members of Lucius's Six Heroes.
As Long as I'm with My Friends	Chalce is revealed to own a Medicham. The Explorers decide to go after the Black Rayquaza.
The Stolen Treasure	Liko's Hatenna is revealed to know Confusion.
Slip and Crash! A Mystery Pokémon?!	A wild Polteageist and Sinistea join the Rising Volt Tacklers.
Song Within the Mist	The Rising Volt Tacklers find Lucius's fourth Pokémon, a giant Lapras.
Lapras's Feelings for its Friends	Lucius's Lapras goes inside the fourth Ancient Poké Ball and is taken under Liko's care. The Rising Volt Tacklers encounter the Black Rayquaza again.
Roar of the Black Rayquaza	Amethio battles the Black Rayquaza and is defeated. Terapagos transforms into its Terastal Form for the first time on-screen and is revealed to know Tera Starstorm and have Tera Shift as its Ability. Diana reveals to Friede that she intends to travel alone again. Liko and Roy have a training battle with Diana, which ends after they complete their objective of trying to land a single hit. Amethio returns to the Explorers' base and requests to train with Hamber.
Respective Departures	Amethio receives a Tera Orb from Hamber. Liko receives Lucius's diary from Diana. Diana leaves the Rising Volt Tacklers. The Rising Volt Tacklers decide to return to Paldea.
Fuecoco…Becomes a Crook?!	Roy's Fuecoco learns Disarming Voice.
The SOS is from Tandemaus?	Liko's Hatenna learns Heal Pulse. A wild Maushold family joins the Rising Volt Tacklers.
Tinkatink's Ideal Hammer	Dot catches a Tinkatink.
Farewell, Sprigatito?	Liko's Sprigatito learns Magical Leaf.
A Wild Mom Appears!	Liko and Roy meet Franka, Dot's mother and Murdock's sister, for the first time. Dot reveals to Liko and Roy the story of how she joined the Rising Volt Tacklers. Dot's Quaxly learns Low Kick. Dot battles Franka and wins. Franka permits Dot to remain with the Rising Volt Tacklers.
Transform! Hero of the Seas, Palafin	The Rising Volt Tacklers arrive back in Paldea. Liko and Roy learn about ecologically similar Pokémon. Ludlow is revealed to have a superhero alter ego called "Mighty G" and own a Sharpedo. Friede is informed of the existence of a mysterious tower.
A Challenge from the Explorers	Liko and Roy cross paths with the Explorers again and have a Multi Battle with Coral and Sidian, which is called off. Liko's Sprigatito is confirmed to have Overgrow as her Ability. The Explorers are revealed to be planning to summon and capture the Black Rayquaza. Sidian is revealed to own an Aerodactyl.
The Plan to Capture Rayquaza	Friede meets Spinel in person for the first time and has another battle against him. The Explorers begin their operation to capture the Black Rayquaza. The Rising Volt Tacklers confront the Explorers to stop their plan. Liko, Roy, and Dot encounter Chalce for the first time. The Brave Olivine suffers major damage when the Black Rayquaza is sent crashing into it.
From So Far Away	Spinel, Coral, Sidian, and Chalce retreat. Dot meets Amethio for the first time. Amethio uses Terastallization for the first time. Amethio's Ceruledge's Tera Type is revealed to be Ghost. Roy's Fuecoco learns Flame Charge. Liko's Sprigatito evolves into Floragato. Amethio and the Rising Volt Tacklers battle against the Black Rayquaza, but they are all defeated. Liko, Roy, and Dot decide they want to learn more about the Terastal phenomenon. Gibeon orders the Explorers admins to continue monitoring Liko and Terapagos while waiting for the Rising Volt Tacklers to gather the Six Heroes. Gibeon is revealed to own a Shiny Zygarde.
HZ046	Liko, Roy, Dot, Coral, and Sidian enroll in Naranja Academy. Liko, Roy, and Dot meet Director Clavell, Chairwoman Geeta, Hassel and Rika of Paldea's Elite Four, Dendra, and Jacq for the first time. Liko, Roy, and Dot each receive a Tera Orb from Geeta. Clavell reveals that Liko, Roy, and Dot must battle Paldea's Gym Leaders to complete the Terastal Training course. Liko and Roy meet Nemona again, while Dot meets her for the first time. Nemona's Pawmo is revealed to have evolved into Pawmot. Liko, Roy, and Dot are assigned with their respective Gym Leader battlesː Liko will battle Katy in Cortondo. Roy will battle Brassius in Artazon. Dot will battle Iono in Levincia. Ann is revealed to be an exchange student at Naranja Academy. Liko meets Ann in person again, while Roy and Dot meet her for the first time. Ann's Oshawott is revealed to have evolved into Dewott. Liko has a rematch against Ann and wins. Dot encounters Coral and Sidian for the first time. Chalce is revealed to have become a teacher at Naranja Academy. Liko, Roy, and Dot set off for Cortondo to start their Terastal Training tests. Orla starts repairing the Brave Olivine.
HZ047	Liko, Roy and Dot visit Cortondo and meet Katy, the Cortondo Gym Leader. Liko uses the Terastal phenomenon for the first time. Liko's Floragato's Tera Type is revealed to be Grass. Liko has a Terastal battle with Katy but loses. Liko passes her first test at Terastal Training and receives her first stamp. Liko, Roy, and Dot head out to Artazon.
HZ048	Liko, Roy, and Dot arrive in Artazon and meet Nemona and Hassel again. Liko and Roy also meet Brassius again, while Dot meets him for the first time. Roy has a battle with Nemona and loses. Roy uses the Terastal phenomenon for the first time. Roy's Fuecoco's Tera Type is revealed to be Fire. Roy has an official rematch with Brassius and wins. Roy passes his first test at Terastal Training and receives his first stamp.
HZ049	Liko, Roy, and Dot arrive in Levincia and meet Iono again. Dot begins to overcome her fear of appearing in public.
HZ050	Dot uses the Terastal phenomenon for the first time. Dot's Quaxly's Tera Type is revealed to be Water. Dot's Quaxly learns Liquidation. Dot has a Terastal battle against Iono and loses. Dot passes her first test at Terastal Training and receives her first stamp. Liko, Roy, and Dot head back to Naranja Academy.
HZ052	Roy meets Ryme for the first time. Roy's Wattrel evolves into Kilowattrel.
HZ053	Liko's Hatenna evolves into Hattrem and learns Brutal Swing.
HZ054	Liko, Roy, and Dot reunite with Ann and arrive back in Mesagoza. Amethio is revealed to be Gibeon's grandson.
HZ055	Liko, Roy, and Dot return to Naranja Academy. Coral and Sidian are revealed to have passed their respective Terastal Training tests. Each of the students participates in the Elite Four Tag Battle: Dot and Iono have a Tag Battle against Poppy and win. Coral and Kofu have a Tag Battle against Larry and lose. Roy and Brassius have a Tag Battle against Hassel and lose. Sidian and Tulip have a Tag Battle against Rika and lose. Liko and Katy prepare to start their Tag Battle against Rika.
HZ056	Dot meets Penny for the first time. Liko's Floragato learns Acrobatics. Liko and Katy have a Tag Battle against Rika and lose. Liko meets Grusha for the first time.
HZ057	Liko, Roy, and Dot reunite with Friede. Liko, Roy, Dot, and Friede meet Raifort for the first time. Raifort reveals Laqua's story to Liko, Roy, Dot, and Friede. Liko, Roy, and Dot are assigned their second respective Gym Leader battlesː Roy will battle Ryme in Montenevera. Dot will battle Larry in Medali. Liko will battle Grusha on Glaseado Mountain. In the process, Liko learns of Grusha's Gym Leader status. Liko, Roy, and Dot decide to head to Medali first.
HZ058	Liko, Roy, and Dot arrive at Medali.
HZ059	Liko, Roy, and Dot properly meet Larry for the first time. Dot's Tinkatink is revealed to know Brutal Swing. Dot's Quaxly evolves into Quaxwell. Dot has a Terastal battle with Larry and loses. Dot passes her second test at Terastal Training and receives her second stamp.
HZ060	Liko, Roy, and Dot change into winter clothes and head for Montenevera, arriving on Glaseado Mountain.
HZ061	Liko, Roy, and Dot arrive in Montenevera and meet Nemona again. Roy meets Ryme again, while Liko and Dot meet her for the first time. In the process, Roy learns that Ryme is the Montenevera Gym Leader. Roy has a Terastal battle with Ryme and loses. Roy fails his second Terastal Training test.
HZ062	Roy has another Terastal battle with Ryme and wins. Roy passes his second test at Terastal Training and receives his second stamp.
HZ063	Liko, Roy, and Dot arrive at the Glaseado Gym. Liko meets Grusha again, while Roy and Dot meet him for the first time. Liko has a Terastal battle with Grusha and loses. Liko fails her second test at Terastal Training.
HZ064	Liko, Roy, and Dot head back to Naranja Academy, but Liko is separated from the rest by Chalce. Liko encounters Amethio again and has a battle with him, which is interrupted by Spinel. Terapagos briefly transforms into its Terastal Form again. Spinel traps Liko and Amethio in a cave underneath Glaseado Mountain. Roy and Dot call Friede for help, and he contacts the Glaseado Gym for further assistance. Coral and Sidian abandon Terastal Training and surround Roy and Dot.
HZ065	Roy and Dot have a Multi Battle with Coral and Sidian, but the battle is called off when Grusha interferes. Liko learns about Gibeon and the Explorers' goals. Liko and Amethio escape Spinel's trap and part ways. Liko reunites with Roy and Dot. Amethio is put on probation from the Explorers for helping Liko.
HZ066	Liko, Roy, and Dot arrive back to Naranja Academy. Clavell initiates the Course Students Battle Tournament between the Terastal Training students. Dot meets Penny again. The Explorers attack the academy to steal data on Terapagos. Dot has a battle with Chalce, but fails to defeat her before she escapes with the stolen data. Liko has a battle with Sidian and wins. Chalce is revealed to own a Xatu. Roy has a battle with Coral and wins. Grusha awards Liko a passing grade on her test after seeing her defeat Sidian. Liko and Roy are informed that they will battle each other in the tournament.
HZ067	Dot has a battle against Rai and wins. Liko's Hattrem is revealed to have Healer as her Ability. Liko's Floragato learns Sucker Punch. Roy's Fuecoco evolves into Crocalor. Liko and Roy have a battle, which Roy wins. The Course Students Battle Tournament ends. Ann returns to Indigo Academy. Liko, Roy, and Dot finish their Terastal Training and leave Naranja Academy. Spinel begins studying the Terapagos data stolen from Naranja Academy.
HZ068	Liko, Roy, and Dot learn about the land of Kitakami and Briar, a Terapagos researcher, from Raifort. The Brave Olivine's repairs are revealed to have been completed. Liko, Roy, and Dot reunite with the Rising Volt Tacklers and set off towards Kitakami. A group of three wild Tatsugiri is revealed to have joined the Rising Volt Tacklers. Friede returns Lucius's Pokémon to Liko's care. Liko, Roy, and Dot have a battle with Lucius's Arboliva, Moltres, and Lapras, which is called off by Terapagos. Zirc and Onia join Amethio on his own mission despite him being on probation from the Explorers. The Rising Volt Tacklers arrive in Kitakami.
HZ069	Liko, Roy, and Dot visit Kitakami and meet Carmine for the first time. Roy and Crocalor temporarily switch bodies due to a Synchro Machine. Friede battles Carmine and wins. The Rising Volt Tacklers learn that Briar is at the Crystal Pool.
HZ070	Liko, Roy, Dot, and Friede head to the Crystal Pool to meet up with Briar. Dot's Tinkatink evolves into Tinkatuff and learns Play Rough.
HZ071	Liko, Roy, Dot, and Friede meet Briar and Perrin for the first time. Dot's Quaxwell learns Air Cutter. Dot has a battle with Perrin and wins.
HZ072	Liko, Roy, Dot, and Friede set out to search for Lucius's Kleavor.
HZ073	Liko, Roy, Dot, and Friede discover Lucius's Kleavor. Lucius is revealed to have had an acquaintance named Rystal. Lucius's Kleavor goes inside the fifth Ancient Poké Ball and is taken under Liko's care. Perrin leaves the group. Liko receives a visit from Diana's Squawkabilly.
HZ074	The Rising Volt Tacklers reunite with Diana. Liko has a battle with Diana and wins. The Rising Volt Tacklers find out about Lucius's history with the Explorers. Liko reveals to the Rising Volt Tacklers what Amethio told her about Gibeon. Liko, Roy, Dot, Friede, and Diana encounter Rystal at the Crystal Pool and learn that she was Terapagos's original Trainer. Lucius and Rystal are revealed to be Liko's great-great-grandparents.
HZ075	Rystal reveals how the original Explorers found Laqua and what happened to Lucius. Terapagos is revealed to know Protect. Rystal returns to where she came from. Liko catches Terapagos, adopting the nickname Pagogo from Rystal. Diana leaves the Rising Volt Tacklers again.
HZ076	Liko, Roy, and Dot are introduced to Sohdayo, a former member of the Rising Volt Tacklers. Liko, Roy, and Dot learn about Mollie's past. The Rising Volt Tacklers head for Olivine City in Johto to search for Lucius's Entei.
HZ077	The Rising Volt Tacklers arrive in Johto, with Liko, Roy, and Dot visiting the region for the first time.

Related articles

• Timeline of events in Pokémon the Series
  • The Beginning
  • Gold and Silver
  • Ruby and Sapphire
  • Diamond and Pearl
  • Black & White
  • XY
  • Sun & Moon
  • Journeys

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