After dropping his siblings into an alley in Dallas — in different years — Five scrambles to track them all down and stop a new doomsday threat.

While Allison searches frantically for Ray, Vanya contends with a crisis at the farm, and Five, Diego, and Lila crash a party at the Mexican Consulate.

Summoned to an emergency meeting, the siblings hatch very different plans for how to spend their last six days on Earth. Lila confronts her mother.

As the Fives plot against each other, one of the siblings makes a big sacrifice to help Vanya, and Lila learns the truth about her parents.