Cheol-min, who lives with his older brother, breaks up with his obsessed girlfriend, Min-ji. Min-ji does not want to leave Cheol-min’s side even after the breakup, so she seduces his older brother. Meanwhile, Cheol-min’s older brother introduces Yoo-jin, who will become his sister-in-law, but Cheol-min falls in love with her beauty and makes a plan to seduce her.
