This nightmarish film tells the story of a woman, Marlene, who moves to Berlin in order to begin a new life and soon meets her upstairs-neighbor Flo, seemingly a nice guy.

After starting a job as a restorer, Marlene quickly forgets about Flo. She finds new friends while simultaneously being drawn back into her past.

And it is almost too late when Marlene finally realizes how dangerous Flo really is - and she gets wrapped up inside a game of life and death.