Arnold Schwarzenegger, Abigail Breslin and Joely Richardson star in this dramatic horror set in a post-apocalyptic America. When Maggie Vogel (Breslin) gets stuck outside after curfew she is bitten by a zombie and becomes infected with the Necroambulist virus. Her father Wade (Schwarzenegger) goes searching for her and finds her in a quarantined zone of a hospital. Her doctor agrees to release her but warns Wade that before Maggie completely transforms he will have to place her back in quarantine. Wade and Maggie spend as much time together as they can, knowing that before long she will turn into a zombie. As Maggie's condition worsens her father and stepmother Caroline (Richardson) become increasingly concerned but Wade can't bear to take her back to quarantine. His other option is to kill her himself and give her a quick death. Will he be able to do the unthinkable?