Mei is a newly appointed female teacher who loves swimming and has become the advisor for the swimming club. A delinquent student notices her because of her weak appearance and personality, and tricks her into "teaching him how to swim," and rapes her in the pool after school. The nightmare doesn't end there, and other students join in, and the female teacher's pussy in her competitive swimsuit is destined to continue to be violated. Even though she has never had a creampie with him, the students' brutal raw dicks are inserted one after another, and the milky semen accumulates in her pussy.