The dream of a member of the swimming club never accepts a confession from a boy student. This is because he is in love with the swimming club adviser. A dream that shows off her boobs and crotch and seduces a teacher with a wife. A teacher who finally loses temptation in the pool after club activities. It crosses the border of a piece of cloth called a swimsuit ... If you cross it, the last forbidden relationship after school that will take place in the school.