The movie follows members of a family as a mysterious plague unleashes flesh-eating zombies in their small town. Suddenly, survival is the main focus, and the family will have to find the strength to fight through the crisis.
Muting the usual cacophony of manipulative musical cues and assaultive sound effects - for long stretches, the movie is almost hushed - Mr. Mikkelsen stirs claustrophobia into panic.
As the film peaks, its derivative, clichéd nature falls away and it becomes its own thing. Your enjoyment level will be determined by if you're patient enough with it to get to that point.