Ryo, a wife who feels that her husband does not see her as a woman, starts an on-site personal gym to make him see her in a different light. She has private lessons once a week with Alex, a young black man, in the late afternoon when her husband is not around. Ryo feels like a man with Alex’s muscular body. Alex, on the other hand, has a crush on Ryo’s glamorous body. One day, when she looks at Alex’s body at the end of the gym, she finds that he has an erection so big that it rips his pants off….