An anti-social chabeol daughter , Moonbyul lives her 24 years life with her strict parents which for them reputation and wealth are the most important in their life. As the only successor of Moonstar Group, she was ordered by her parents to engage to the only son of Choi family, Minho. As the return of this engagement order, Moonbyul ask her parents to let her move out from their family house to live her life alone before she become Mrs. Choi for Minho.

Meanwhile a totally typical office girl, Youngsun lives her life opposite than Moonbyul. She is a very lonely girl, lives her life poorly,alone, solo without family and friends. Her life become more worse when she was fired by her company and she need to leave her house because her contract expired and she doesn't have money to renew the contract.

An event happended which give a chance to Moonbyul and Youngsun know each other and they need to live together. Moonbyul always reach out her hand for Youngsun which caused Youngsun's heart keep beating faster than its normal rate everytime she face Moonbyul. Moonbyul who is known as an anti social person, only show her cheerful and different side only to Youngsun. Why?

This story expand when Youngsun finally realise her true feeling to Moonbyul. How will Moonbyul react when she find out Youngsun's feeling to her? Will this straight young lady accept the other girl love?