Thomas hitchhikes from Hamburg to Munich where he meets his ex-girlfriend, Peggy. Thomas doesn't have a bed for the night and goes home with Peggy, not knowing that she and her four roommates have all made a strange pact.
Red Sun is a 1970 West German thriller film directed by Rudolf Thome and starring Marquard Bohm, Uschi Obermaier, Diana Körner, Sylvia Kekulé and Gaby Go.