In the aftermath of nuclear destruction, Strand thrives in the new world.
Morgan and Grace must leave the safety of the submarine to face life outside.
Dorie and June make the best of Teddy's bunker until its history is uncovered.
While searching for Wendell, Sarah crosses paths with a dangerous survivor.
Dwight and Sherry's code and future come into question when they are tasked with retrieving someone.
Morgan searches for Al, only to discover that he's not the only one looking for her.
Morgan seeks Strand's help at a dangerous time for the tower.
Alicia enlists Morgan's help to search for a new home for her people, but the search is complicated.