Laura, 25, is a starlet in a L.A.R.P. (Live Action Function Playing) Game, where the individuals play the survivors of an atomic war who live underground in a secured shelter. After a number of mysterious accidents, the game is disrupted and the players leave the bunker while the team continue to be behind to check out the loss of Greg, the mastermind of the game. They quickly find themselves caught inside and also in peril as they start to die in strange ways and also the team recognizes that somebody or something paranormal is playing a twisted video game with them which swiftly plunges into a terrifying fight for survival.