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.

As people start disappearing in waves, Five and Lila reluctantly team up to solve their time-travel problem. Klaus sees a new side of his father.

Reginald goes all out to convince the children to sign on to his plan. Five tries to recover a drunken memory. Allison has a change of heart.

Shaken, the family confronts the deadly mysteries of the Hotel Oblivion — and the growing suspicion that their mission is not what it seems.

With their powers restored, the gang embarks on a mission to find Sy Grossman's daughter. But they soon encounter hostility in a seemingly quaint town.

With Ben and Jennifer in peril and the Cleanse underway, the family unites for one last fight to save the world — and end the infinite devastation.