A single mother named Yukari has raised her son Shuichi all by herself. However, due to her overprotectiveness, Shuichi has become spoiled and abusive towards his classmate Hajime. When Yukari finds out about this, she apologizes on behalf of Shuichi but her efforts are met with resistance from Hajime, who seeks revenge. He takes advantage of the situation by seducing Yukari physically. His thirst for vengeance doesn't end there; he even goes as far as propositioning Shuichi, asking him if he can borrow his mom for some time...

女手一つで一人息子の修一を育て上げた優香。しかし溺愛し過ぎた結果、わがまま放題になった修一は、密かに同級生のハジメを苛めていた。その後、真相を知らされた優香は修一に代わって謝罪するのだが…。復讐心に燃えるハジメは到底許すことができず、償いの代償に彼女の肉体を弄び●すのだった。さらにそれだけでは収まらず、事情を知らない修一に詰め寄り「お前の母さん貸してくれよ…」と迫って…。