Rin, a single mother. She starts working at a rejuvenating esthetic salon to support her life with her child. Her first customer is a kind man, and she feels relieved. Later, she receives another request from the man, and he says, "I'll give you pocket money," so she disrobes completely, which is prohibited in the shop. Then, she is given an erotic massage in return, and ends up having sex as things progress. Furthermore, later, she receives a request from the man for the third time…