The Rising Volt Tacklers have gathered to eat at Barato's to celebrate Liko, Roy and Dot passing their first Terastal Training tests while Murdock cries lots of tears for Dot's performance in particular. Dot tells him to get a grip and that the course isn't even over yet. Liko agrees with Dot saying they can't let up now. Mollie and Orla tell the kids that they also should slow down and relax to have a good balance in life. Roy calls the waiter to get him another orange juice. Orla notices a smiling Liko, who says that it does her heart good to see everyone together again. Orla tells Liko that by the time they get back, the ship should be airworthy again. Friede tells the kids that he will head over to the Naranja Academy once the meal is over. Dot says the implementation tests don't start until tomorrow. Friede then shocks everyone when he reveals that he made an appointment to see Geeta and Clavell.
Meanwhile, back at the Brave Olivine, Ludlow finds a Gimmighoul Coin on the ground and picks it up. He remarks that every being bears a history, so too does every object bearing an imbued emotion. As he looks down however, the coin disappears from his hand.
Friede and the kids meet with Clavell and Geeta, the latter in particular being familiar with his work as a Pokémon Professor. Just as Geeta asks about Terapagos, said Pokémon pokes its head out of Liko's bag, shocking Geeta and Clavell. They ask where Liko found it, and she answers that it was a gift from her grandmother when it was a pendant. Friede mentions sightings of Terapagos in Paldea through old records, hoping that Geeta would know something about them. Geeta brings up old sketches of Terapagos's forms on the screen. Liko recognizes the sketch on the right as Terapagos's Terastal Form that it took on when protecting Liko from the Black Rayquaza. Clavell says that while no details of Terapagos have been recovered, it's said to be a Pokémon with a strong connection to the Terastal phenomenon. They turn to a photo of the Great Crater of Paldea. Geeta says that a Pokémon resembling Terapagos was sighted in Area Zero, the deepest point of the crater, which was recorded in the Scarlet Book. Hearing this, Dot grabs the Scarlet Book from her bag and shows it to Clavell and Geeta. The latter skims through it and finds a sketch of what is thought to be a third form Terapagos can take. Liko tells Geeta that Terapagos wants to go to a place called Laqua. Roy says that it's a place that the ancient adventurer reached a hundred years ago. From this, Geeta hypothesizes that solving the mysteries of Terapagos will help solve the mysteries of Laqua. Roy suggests going to Area Zero, but Clavell says that entering will be difficult, seeing how there was recently an accident there. Nevertheless, Geeta offers to accompany them one day in doing so. She also points them to someone who may know of things from a hundred years ago.
At the library, Dot puts the Scarlet Book back in its place. Friede remarks how mysteries only lead them into even more mysteries begging to be uncovered. Roy and Dot notice Liko's look of unease, to which she admits that she doesn't really know anything about Terapagos. Roy disagrees, saying that she's learned a lot about its personality. The group is greeted by the Naranja Academy's history teacher, Raifort. Liko is about to introduce herself to Raifort when she sees another Terapagos by her side. Raifort brushes this off as an "illusion", and sure enough, the Pokémon reveals itself as her Zoroark. Liko scans the Illusion Fox Pokémon with her Rotom Phone, and as she lowers it, Zoroark has taken on the appearance of Captain Pikachu. Raifort knows that the group is following a lead, and as Liko is about to answer, Raifort says that she is heading out to do fieldwork right now and offers to let them join her in finding some ancient treasure.
While walking on the trail, Raifort hears about the legend of the ancient adventurer, his Six Heroes, the paradise they were aiming to reach, and Liko receiving Terapagos in the present day. All this gets her more excited and even more curious. Friede asks about Laqua, and Raifort mentions it recorded in a history book. Zoroark signals Raifort, who tells everyone to lay low for the active treasure nearby. The kids hear the sound of metal, thinking it must be a Pokémon. Roy goes over to the bushes and spots a Gimmighoul, scanning it with his Pokédex. Friede says that its rare for anyone to catch its Roaming Form in Paldea, so Roy declares that he'll be the first. Just as he sends out Fuecoco however, it vanishes and leaves behind a Gimmighoul Coin. Raifort tells Roy that Gimmighoul must have dropped it in a panic, letting him keep it. Roy then spots Gimmighoul on Fuecoco's head. It jumps off Fuecoco to reveal itself as Zoroark again, who hands Raifort another Gimmighoul Coin. The group decides to split up to look for more Gimmighoul Coins. They are then pointed by Terapagos to the ruins of a fort. As the rest of the group, excluding Roy, comes over, Terapagos runs down there first, prompting them to follow.
At the ruins, Terapagos crawls into a hole and greets the Nacli and Charcadet inside. Raifort tells the group that Charcadet has supported knights and nobility since ancient times. Terapagos comes out with Charcadet riding on top, which makes Liko smile. Nacli greets Liko, and Dot wonders why its not afraid of people. Friede says that Nacli has been helping humans for hundreds of years. Raifort shares that these two have lived in Paldea for a long, long time, forming connections with people. Roy comes back with his hat full of Gimmighoul Coins, boasting about how he's a natural-born treasure hunter. Raifort points to their objective, the watchtower. She says that back when the region was divided into multiple countries, the emperor built them to keep watch on the neighboring countries. Seeing the tower, Roy sends out Kilowattrel and tells it that the tower where they met looked like this one. Raifort remarks that artifacts built by those from days long past now play a part in your own story. She says that history is the past leaving its impact on the present.
Roy flies Kilowattrel to the top of the watchtower. Friede sends out Charizard and carries Liko and Dot up there too. On the watchtower, the kids overlook the land when Raifort points them to a treasure chest. Friede gets a feeling and Fuecoco opens the chest to reveal Gimmighoul in its chest form. A purple aura surrounds the Coin Hunter Pokémon, prompting Roy to skip over and hand it all the Gimmighoul coins he collected. Liko and Dot wonder what's wrong, and Friede says that Roy has fallen under Gimmighoul's spell; controlling humans to make them collect coins, only to steal every last one. With all of Roy's coins handed over, Gimmighoul jumps off the tower and runs off. Raifort says that by hunting for old coins, they were able to meet modern-day Pokémon. She then shares that the history book regarded Laqua described it as such: "Once upon a time, far beyond Paldea, a hundred days and nights away, there was a Pokémon paradise. The shining pink of Laqua." Hearing this, Friede realizes that Laqua is connected to Laquium. Raifort shares that people always dismissed the paradise as nothing more than a fairy tale, and that long before the Naranja Academy was even founded, this land was once part of the Paldean Empire; and even before that, another kingdom entirely. Raifort tells Liko to imagine what the Paldea now may have looked like back then, because even though you can't see it for yourself, the more you learn about the past, the more you can imagine it. Seeing Terapagos climb onto the ledge of the tower and cry out, Liko envisions Lucius and Terapagos on the tower, overlooking the land. Raifort tells everyone that discovering the past is an adventure on its own; if you believe in it, you can find it. Friede thanks Raifort, even though she just wanted to show the children of the future how much fun learning about the past can be.
The next day at the Naranja Academy, Clavell greets all the students, informing them that that those who have passed the basics test will be moving on to the implementation tests. Dendra assigns the students to a designated Gym to take on its Gym Leader, which Coral finds boring for being the exact same thing as the basics test. Dendra informs the students that this time around, they will have to use two Pokémon instead of one. Hearing this, Dot becomes worried about Tinkatink's sensitive nature. Roy and Dot acknowledge that if they can pass the implementation, they will finally be able to use Terastal phenomenon. Liko looks forward to that since learning more about Terastal phenomenon will help her learn more about Terapagos. Checking their apps, Roy gets Ryme in Montenevera, while Dot gets Larry in Medali. Liko gets Glaseado Mountain, which means she will battle Grusha. Liko remembers Grusha from when he approached her after her loss to Rika of the Elite Four, making her a bit nervous. Roy asks which route they should take this time, and Liko says that Medali seems to be the closest this time. Sharing the Rising Volt Tacklers handshake, the group sets out for Medali.
