Criminal genius Egon Olsen presents his accomplices Benny and Keld with yet another infallible plan that can only end badly. The booty is a red suitcase containing values worth five million. The sinister mastermind Bang-Johansen carries the suitcase. The Olsen Gang follows him to Paris, where they put their cunning and carefully organized plan into motion.
Winnie's mother is going to Bangkok to settle an inheritance matter and is looking for a good boarding house for her child. She calls Dr. Linager, who tells her that he has a boarding house for "expensive children," but the price is no object to Winnie's mother. When Winnie shows up, the good Dr. Linager is a little surprised. He is a veterinarian and thought he was going to be looking after a Siamese cat, but everyone in the house naturally welcomes the charming little Winnie.
Seeking revenge against the rival clan responsible for the killing, Hagbard, the son of a slain Norse king, calms down long enough to establish a truce. He also falls in love with Signe, the daughter of his one-time enemy. Signe's former beau, sizzling with jealousy, breaks the truce and makes it appear that Hagbard was responsible.
