A young woman left her family for an unspecified reason. The husband determines to find out the truth and starts following his wife. At first, he suspects that a man is involved. But gradually, he finds out more and more strange behaviors and bizarre incidents that indicate something more than a possessed love affair.
Mark (played by Sam Neill
) returns home to Berlin
to find his wife Anna (Isabelle Adjani
) is leaving him for unclear reasons. He initially suspects an affair and hires detectives to track her, but gradually discovers clues that something far stranger is afoot. Instead, his wife leaves him and her lover, Heinrich (Heinz Bennent
). What follows is a series of horrific, compelling and surreal events.