Kyoko Kyoko, who was famous throughout the country in swimming competitions during her school days, returns to her alma mater, Ataka Gakuen, as the swimming club's advisor. The once prestigious swimming club is now in danger of being dissolved, and Kyoko is invited to help turn it around. However, due to Kyoko's passionate coaching, students Hisamichi and Hashimoto plan a rebellion. They call Kyoko to the gym storeroom, knock her unconscious, and play with Kyoko body.