Ricky Rapper and Nelli Nuudelipää leave for the island, where Elvi Rapper works as the resort hostess. At the same time, Uolevi Horsmaniemi arrvies with his daughter Venla, who is little older than Ricky and Nelli. Venla's arrival confuses the relationship between Ricky and Nelli, as Nelli begins to spend more and more time with Venla.