Summer camp at the swimming school. Under the clear blue sky, they were supposed to be having an energetic lesson… but students Shota and Chibi-Suke ignored the swimming altogether and chased after the beautiful coach 'Ema's' ass. Having reached her limit, Ema scolds the two, but later finds herself subjected to a heated counterattack from Shota and the others. One day during a lesson, Chibi-Suke suddenly starts drowning, and Ema rushes to his rescue. For some reason or another, she gets accused of something and ends up being toyed with by the two, ultimately leading to sex. That night, however, Ema finds herself soothing her throbbing crotch. The commotion that begins with a certain wish on the final day before going home…?
