Billionaire and playboy Sverre Hartkorn takes a psychoanalyst and seven of his closest friends to the Blåkam cabin to play the Murder Game. The only way to get away from the cottage is a 2 hour snowmobile ride. Anyone who manages to solve the fictitious murder mystery by 21 first day of Easter, wins NOK 5 million. It is said that the murderer Ulvar Mørkli goes back to the cabin, and after only one day the Easter idyll is broken. One of the tour participants is beheaded in the snow. The cabin dwellers have to fight a desperate battle against time and against a murderer who has no intention of giving up immediately.