After transferring to a new school, teacher Aoi eagerly hopes to coach the swim club again. But the only people who appear at the pool after class are Hosoda and Machida, two delinquent adult student role-players who claim they used to belong to the club. When she urges them to return, they refuse unless she lets them fondle her breasts. Desperate to revive the team, she gives in the next day—only to discover it was a trap and they secretly recorded everything, giving them the leverage to force her into daily sexual service and creampies.