A highly dysfunctional blended family is forced together when they realize a reported virus is actually the onset of the undead apocalypse.
As Madison struggles to keep Nick from crippling withdrawal, Travis ventures out to find his son before Los Angeles falls.
Travis, Liza and Chris seek refuge with the Salazar family after escaping a violent riot. Meanwhile, Madison defends her home.
Madison and Travis witness different sides of the National Guard's occupation of their neighborhood.
The National Guard's plan for the neighborhood and its residents is revealed, forcing Travis and Madison to make a difficult decision.
As civil unrest grows, and the dead take over, Travis and Madison try to devise ways to protect their families.