Middle-aged Max and Sara meet and fall for each other in Palm Springs, but their love story is cut short due to a sudden zombie outbreak. Max is not as mild-mannered as he appears, and has a history involving government-sanctioned hits, but one zombie he isn't able to kill is his darling Sara.
The film sees a grieving homicide detective chosen to lead a task force in Los Angeles to stop a criminal organization. He soon unravels a conspiracy involving corruption in his own department.