An American Family goes on a vacation. During their trip, they begin to notice that something strange is happening to the people around them. They are starting to sound and look crazy, attacking their own kind for no apparent reason and even devouring one another like wild beasts. At first glance it seems like a game of zombies but in fact this is no game - this has become their new reality, one in which fear and death reign supreme. The family manages to escape in panic and soon they realize that the only way they can manage to stay alive is to defend themselves by any means. Through their struggle for survival they encounter people from different backgrounds and are forced to band together for one purpose - Survival.