Ena lives on a remote farmstead. One stormy night, hydraulic engineer Sieghart appears at her door after his car gets stuck in the mud. Although Ena falls in love with Sieghart, she decides to marry her fiancé Mathias. She is incapabale of hiding her true feelings from her groom-to-be, and on the night before the wedding, Mathias forces the pair to join him for a carriage ride – with deadly results.