Reiko has been married for eight years, but still has no children. In fact, in the past five years, she hasn't even had sex with her husband. Every day, she has to masturbate using her fingers to forget about her sexual desires. Her mother-in-law constantly pressures her, saying she doesn't need a daughter-in-law who can't bear grandchildren. In the midst of all this, Reiko even discovers that her husband visits soaplands to meet other women. The next day, she falls ill and unexpectedly receives a gift from Shinji, the son of a woman living nearby. Feeling hot, she wears revealing lingerie without a bra, allowing Shinji to see her nipples peeking through. Suddenly, a headache hits Reiko and she falls into Shinji's arms. Unable to resist Reiko's seductive body, Shinji boldly kisses her, caressing her all over. Despite saying "no," Reiko's body responds, craving the sexual satisfaction she has been longing for years. A daring idea crosses her mind. If her husband is having an affair, why not let another man impregnate her? This way, all her problems would be solved. With this thought in mind, she begins to seek out healthy men, inviting them over to her house to seduce them and make them ejaculate inside her...