In an isolated country house at the end of WW2, German soldiers indulge in orgiastic behaviour with a gew whores. One soldier films the perversion but the filming is brought to an end by allied bombing. In the present, 6 teenagers, on their way back to Paris after a touring holiday, find the house deserted. They decide to stay the night. During the night, the soldier who filmed the deviant behaviour emerges from a mirror and seduces one of the girls who responds to his violent sexual overtures. As they try to leave the next day, they find that the attempt brings them back to the villa. After returning inside, they find themselves locked in, with the ghosts of Sodom. . . . .