Han Ji-eun, an aspiring script writer, lives in a house called "Full House" built by her late father. One day, her two best friends trick her into believing she has won a free vacation. While she is gone, they sell her house. On the plane, she meets a famous actor named Lee Young-jae. Through comedic events, they get acquainted during her vacation and when she returns, she discovers her house has been sold to him.
Though they don't get along with each other as she is messy and he has a bad temper and likes cleanliness, they agreed to live with each other. At first, Ji-eun works as his maid in order to buy her house back, but because of Young-jae's wish to make the love of his life Kang Hye-won jealous, they get married. They set up a contract for the marriage to last six months. During that time, complications arise and Ji-Eun and Young-Jae become attracted to each other. Also, Ji-Eun starts to feel a strong bond with Young-jae's family. However, Young-jae's bad temper along with the romantic attentions of Yoo Min-hyuk, Ji-eun's handsome and friendly publisher, starts to create a rift between the couple. So does Hye-Won, who starts to feel jealous when she sees Young-Jae and Ji-eun getting close. Eventually, Young-jae and Ji-eun get a divorce and he moves away.
When he returns he realizes that Ji-eun hasn't married yet and knows that he has fallen in love with her - and she with him. He proposes to her and they finally get married for a second time. But this time, it was for the right reasons.