A woman is betrayed by her husband, but she valiantly works to overcome her reality.

Kang Jae-Mi (Lee Bo-Young) led a happy life with her parents, but by the time she was 19-years-old her father had an affair and her parents soon divorced. Jae-Mi promised to her mother that she would never see her father again. Later, Jae-Mi fell in love with Han Jung-Soo (Jin Lee-Han) and married. 3 years later, Jae-Mi tries her best to make a happy family. She runs a restaurant with her husband and for all intents and purposes is happy. Jae-Mi also believes her husband is happy. Due to her parents divorce, Jae-Mi is also firmly resolved that she will never divorce, but, it turns out, Jung-Soo is having an affair with another woman. Furthermore, his mistress becomes pregnant and Jung-Soo wants a divorce. On their 3rd anniversary, Jung-Soo gifts airplane tickets for Guam to Jae-Mi, her mother and aunt.

Byun Dong-Woo (Lee Tae-Sung) is a lawyer, but supported by his mother. He has always been influenced by his mother and sister. Dong-Woo always thought he wanted to be single for the rest of his life. His sister's husband is also Jae-Mi's father Kang Hyung-Do (Cheon Ho-Jin). To make his mom feel better Dong-Woo bought airplane tickets for Guam.

Now both families head for Guam on vacation. On the airplane, Jae-Mi sleeps under a blanket. Dong-Woo mistakenly kisses her, believing Jae-Mi is his girlfriend Seo In-Young. This is their first encounter.

Meanwhile, while Jae-Mi is in Guam, her husband Jung-Soo carries out his plan to file for divorce. He goes to the bank and takes out all of their money. Furthermore, he cancels their insurance to get their money back. The last step in his plan is to get a woman who resembles Jae-Mi to appear in court and agree to the divorce.

In Guam, by chance, Jae-Mi sees her father. This is the first time she has seen her father since her parents' divorce. During a party on their last night in Guam, the two families all run into each other.

Back in South Korea, Jung-Soo successfully pulls off his plan and gets his divorce legalized. Without anybody in Guam knowing about the divorce, they return to South Korea ...