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 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 Guard's occupation in their neighborhood; the family tries to adapt to the new world.

The National Guard's 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.