Han Ji Eun (Song Hye Kyo) is an innocent woman who gets swindled by her best friends in need of money. After a few unfortunate encounters with top actor Lee Young Jae (Bi), Ji Eun finds out that her house was bought by the actor. Young Jae has been in love with his best friend, Kang Hye Won (Han Eun Jung) for more than a decade but she has her eyes on Yoo Min Hyuk (Kim Sung Soo), their senior. After growing tired of waiting for her to come around, Young Jae proposes a contract marriage to Ji Eun in order to spark some jealousy and get the media off his back. In an attempt to earn back her house, Ji Eun agrees to be his wife for a year. But as they live together, they start to learn what it means to live a married life, genuinely care for one another and have each other's back when they're up against the world.