Masaki Yasuda is a career woman who works as a manager at an entertainment production company. She reveals her hidden masochistic tendencies and transforms into a perverted woman who not only has her first creampie, but also willingly swallows it. In a hot spring resort inn, isolated from the hectic reality, she accepts other men's semen into her vagina until she goes crazy. A record of orgasmic sex in which she orgasms over and over again, caught between immorality towards her husband and pleasure.