When Halfdan’s old flame, Karina, comes to town, the reaction of his jealous wife Märthe begins to concern him. But Halfdan has no clue that they’re in fact childhood friends, and the two women agree to keep Halfdan in the dark for a little while longer. When Märthe is on her way out of town, Halfdan sees an opportunity to replace his jealous wife with an actress in order to impress Karina. Karina tells Märthe about the incident and they decide to teach Halfdan a lesson.