One rainy night Do-Hoon is involved in hit-and-run of a woman Min-Hyuk was in love with. Do-Hoon hides that fact he hit a person to his girlfriend, Yoo-Jung, who was in car with him. Unaware of the fact, she is happy that he finally proposed to her. Meanwhile, Do-Hoon's father is trying to marry him to Se-Yun. While two of them are friends, none of them really love one another and their marriage would be that of convenience for their families.