Losing his parents in an accident at eight years old, Hae Bom had ended up living in Tae Seong's house. They were close friend, and their mothers were intimate as well. However, Tae Seong liked Hae Bom as a 'partner' not a brother, so he strongly opposed to live with him at first. Becaus of Tae Seong's opposition, Hae Bom thougt that he did not like him and he kept him away. Time past and they became a third-year high school student. Being class mates, Tae Seong saw Hae Bom being bullied by a student. Tae Seong got shocked and after that he started to take care of him. Since then, they became intimte more and more along with resolving long-last misunderstanding one by one. And, their intimacy has been deepen through several incidents....

One year ago, In Yeong got dumped unilaterally by her boyfriend who was for 8 years. Then, she decided not to get married. She starts to look for a relationship with someone after having a night together. ​She puts all her effort to get a job, and finally, an opportunity to work with an illustrator, who she liked, came to her. "Her ex-boyfriend, why are you here?" She found out that the illustrator was her ex who left her and went to the US for college. What made it worse is that she lost all of her home deposits borrowed from her parents by real estate fraud. She heard about the newlywed loan, and went like "Should I just do a contract marriage?...