A year earlier, Alberto has a conflict with the construction company he works for, claiming that the infrastructure of his building is in poor condition. In 1985, seven hours have passed since the earthquake. Under the rubble, Hilda and Toña are put to the test with a complicated life-or-death operation. Camila arrives at the airport; Ignacio and Guillermo are hot on her heels.

In the season finale, 9 hours have passed since the earthquake that shook Mexico City. Camila is still a target of the government, Ignacio gives the order that no one goes over the collapse despite being so close to getting Rosario and the baby out; Ángel will have to make a decision. In Tlatelolco, Lucía and Pablo's lives hang in the balance, but unexpected help could change everything.