Sarah Erdmann has become engaged to Manfred Roth, who is a few years older than her, and is intent on getting married. But, the relationship seems ill-fated. Sarah finds out about the suicide of Manfred’s father and learns that his cranky mother is working hard to prevent the marriage. Sarah’s mother Klara, who more or less has a bad vibe about the whole situation, hears unpleasant details regarding her future son-in-law and his family from a former girlfriend of Manfred - and naturally decides to intensify her research…