Minho and Krystal bumps into one another accidently taking each others passports. Once meeting again Minho and Krystal are both forced to stay together to look for his missing lover. Once finding her it ended up in heartbreak on Minho's part and a drunken one night stand for the both of them. Going back to Korea Minho decided to run away from the problem unknowingly leaving a very pregnant Krystal behind. Finding out that she was pregnant Krystal left to move to Japan to have her baby alone. A year later Krystal returns to Korea to meet up with her family. Unkwowningly to her her clueless sister Jessica ended up his baby daughter. THe resaults of which made their parents force them to get married.

Will Minho be able to overcome the responsibilities of fautherhood with Krystal or will Krystal nagging and Minho's spoil-ish nature stop them.