Ae-yeong, who lives with her older sister Ae-ran, fails every time she finds a job. For Ae-ran, who is worried about her brother, her fiancé Tae-soo brings Min-ho, her junior, as Ae-yeong’s private tutor. Ae-yeong falls in love with Min-ho at first sight, but Min-ho has feelings for Ae-ran, Tae-soo’s fiancee. Ae-yeong, who learned of Min-ho’s heart, approaches and seduces her prospective brother-in-law, Tae-soo, out of jealousy…