A beastly, cold hearted warrior who won't let anyone else into his heart except his late wife. A mischievous and cheerful girl who fell for him at the first sight. How will they end up if they were forced to marry and live together?

When her professor's son decided to fall on her car while jumping off a building, she thought only her too busy day got ruined, but didn't know that he will become her new housemate as well.

They didn't know that they were in love...until he started dating another girl. It's a friendship that needs to be turned to love, but realized a little bit late.

"Hyowon-ah..." "Hmm...?" "Let's break up." She let him go. But he was the one who couldn't let her go.