Laura, 25, is an actress in a L.A.R.P. (Reside Motion Position Enjoying) Recreation, the place the contributors play the survivors of an atomic struggle who reside underground in a sealed bunker. After a number of mysterious accidents, the sport is interrupted and the gamers depart the bunker whereas the employees stay behind to research the disappearance of Greg, the mastermind of the sport. They quickly discover themselves trapped inside and in peril as they start to die in mysterious methods and the group realizes that somebody or one thing paranormal is enjoying a twisted sport with them which shortly plunges right into a terrifying battle for survival.