September 19, 1985. 7 AM, Mexico City. Dr. Ángel is handling a complicated delivery. In downtwon, Camila Is working on an independent report. The minutes slowly approach 7:19 AM. The hour that changed the course of an entire nation.
In 1985, an hour after the earthquake, signs of life are found under the rubble at the General Hospital. Gabriela heads back to Tlatelolco. Meanwhile, Camila discovers a group of women trapped in a garment factory.
In 1985, two hours after the earthquake, Ángel continues his rescue efforts when Ignacio visits him. Camila encounters Gabriela near Tlatelolco. Beneath the rubble, Alberto finds another survivor.
Three hours after the earthquake, Ángel discovers a new way to reach the babies and nurses trapped under the rubble with Pepín's help. Gabriela and Camila each make their way into the collapsed building in Tlatelolco.
Four hours have passed since the earthquake. Rescue operations at the hospital are ongoing with the help of students. Efforts to rescue survivors in Tlatelolco continue. Deep within the rubble, someone is calling for help.
Five hours have now passed since the earthquake. An incident involving Ángel, Ignacio, and Camila triggers a race against time to request foreign aid. The government's intentions and Ignacio's alignment are finally revealed.
Six hours after the earthquake, Chave and Pepín find themselves caught off guard by a crucial decision. In Tlatelolco, the relentless efforts and hours spent removing rubble are paying off.
Seven hours have passed since the earthquake. Beneath the rubble, Hilda and Toña are faced with a life-or-death operation. Camila arrives at the airport, with Ignacio and Guillermo hot on her heels.
Eight hours after the earthquake, they remain trapped under the rubble, running out of oxygen. At the General Hospital, a miracle amidst the tragedy occurs. Camila, deprived of her freedom, may receive help from an unexpected source.
Nine hours have passed since the earthquake that shook Mexico City. Camila remains a target of the government, with Ignacio issuing orders to prevent anyone from entering the rubble, despite being so close to rescuing Rosario and the baby.