For this blue bloomers retreat, three bloomers girls—Ruka Kanae, NIMO, and Hikaru Misaki—take part in intense, sexually harassing training under a merciless coach. They are pushed to their limits in various locations, including riverbanks, pools, and exercise rooms, testing both their bodies and minds. The coach and supervisor sniff out the girls' bloomers soaked with sweat and arousal, delivering relentless discipline. Amid the torment, the girls begin plotting their countermove. Their secret strategy gradually unfolds, leading to an unexpected turn of events.