A young woman, Regina, has been killed in her apartment. Investigator Anderson holds Regina’s husband as a suspect for a murder because he is unable to remember his location at the time of the fateful event. Gradually, Anderson is convinced that Oto has not only killed his wife, but he also tries to hide his true identity – notorious criminal Schmit.
The film combines three short stories: Der Mond, "Tristan und Isolde" and "Aida". The themes of these short stories are sin, duty and love.
