Kim myung soo is twenty years old, a college student that has been together with you for a long time. They've decided to get married but new consequences came to them. They have a deal with myung soo's mother. They have to pretend that they wasn't a married couple in myung soo's company. A company that didn't allowed a married couple to work there. To show to his mother that he loves you so much until no one can break you apart, he accepts it. Until he meet another girl in his life, DoYeon. Meantime, you was stuck with Kyungsoo, your best friend, and Chan Yeol that fell in love with you.