David and Brie enjoy their lives in a small town with their two daughters. When a neighbor's dog is attacked and in return, bites his owner, things escalate in a way no one imagined. Any living thing that is bitten dies and turns into a zombie.

Things hit too close to home when the couple's youngest daughter is bitten by her best friend while chaos rocks the town. The army does whatever it takes to prevent anyone from leaving.

Trapped as his loved ones crumble around him, David must find a way to salvage what he can of his dwindling family before their time runs out.