After averting a doomsday in Dallas, the Umbrella siblings return to a very different Academy — now ruled by the powerful and hostile Sparrows.

With their Number One missing, the Sparrows take a hostage. Allison makes a painful discovery. Klaus takes Five on an eye-opening road trip.

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.

Luther and Sloane hatch a plan to end the war between the families. Viktor reconnects with someone from the past. Five has an unsettling encounter.

Klaus's relationship with death proves more complicated than anyone knew. Viktor finally learns what happened to the Umbrellas' mothers.

Five chases down Pogo, Viktor and Harlan attempt a transfer of powers, and Diego and Lila venture beyond the wall of the White Buffalo Suite.