Ha-jin spends her vacation at her married sister Ha-young's house. However, her sister's husband, Kyung-min, was Ha-jin's ex-boyfriend. Ha-jin can't forget her Kyung-min even after her marriage. Kyung-min also feels sorry for her Ha-jin because of her past mistakes. In the end, when only the two of us are together, Hajin and Kyungmin share a passionate love...