When Ika finds a lost wallet, the owner rewards her with 10,000 yen, which she spends on frozen shrimp. When the TV in the beach house breaks down, Ika is invited to sleep over at the Aizawa household. While exploring the beach, Ika and Eiko find an imitation Squid Girl built by the owner of a rival beach house, Southern Winds, to attract customers. The owner challenges Eiko to various matches for possession of the original, though the imitation's efforts prove scary.