About the title
Two cult members, novice Joachim and his mentor Christopher, come to the house of a married couple, Sebastian and Linda, to recruit them. Sebastian dies as a result of an accident. The cultists hide his body and the bound Linda in the sauna. At that moment, a group of strangers invited by Linda and Sebastian for a game of "Mafia" arrives at the house. Joachim and Christopher pretend to be players who arrived a bit early, and tell the guests that the hosts had to go to the hospital because of Linda's injury. The game begins, but among the participants is an inquisitive police officer named Heidi.