Annie is a tour guide in Memphis, TN when the world ends. Her survival in the ensuing years after The Day is revealed as well as her encounter with a traveling group of survivors.

Xavier battles the elements and other threats as he follows a broadcast to Atlanta in search of his wife, Teri.

Sinatra wakes to discover a new paradigm in the bunker and takes steps to safeguard its biggest secret.

Xavier and Annie travel to Atlanta, contrasting life in this new world and the one he left behind in the bunker.

Xavier meets Gary and learns what happened to Teri on The Day.

Xavier and Gary set their plan in motion. Back in Paradise, Sinatra takes action, while Gabriela follows a new lead, and Jane's past is revealed.

Xavier has unfinished business. Meanwhile, Sinatra meets with Link as Paradise prepares for a potential threat.

Worlds collide. Time is of the essence for Xavier. Link and his team spring into action. Sinatra puts it all on the line.