A highly dysfunctional blended family is forced together when they realize a reported virus is actually the onset of the undead apocalypse.
While Madison struggles to keep Nick from a crippling withdrawal, Travis ventures out to find his son before the city of Los Angeles falls.
After they escape a riot, Travis, Liza and Chris seek refuge with the Salazars; Madison defends her home.
Madison and Travis see different sides of the National Guards occupation in their neighborhood; the family tries to adapt to the new world.
The National Guards plan for the neighborhood is revealed; Travis and Madison make a difficult decision.
As civil unrest grows, and the dead take over, Travis and Madison try to devise ways to protect their families.