彼氏がいることを隠し、周囲の男たちに思わせぶりな態度で貢がせていたみお。ある日、彼氏の存在を知った羽田は、自分が貢いだ金を返すよう迫る。しかしみおは応じるどころか「私と恋人気分になれたんだから良かったでしょ？」と開き直る。激昂した羽田は暴走し、みおを自宅に監禁。そして自身と同じくみおに翻弄された男たちを集めて復讐計画を企てる。

Mio had been hiding the fact that she had a boyfriend and was using flirtatious behavior to get men around her to shower her with gifts. One day, Haneda found out about her boyfriend and demanded that she return the money he had given her. However, Mio not only refused but also retorted, "You got to feel like you were in a relationship with me, so wasn't that good?" Enraged, Haneda went berserk and locked Mio up in his home. He then gathered men who, like himself, had been manipulated by Mio and began plotting revenge.