Park Bo Mi is a very smart 5 year old, her grandfather is Mr. Park the richest man in Korea. Her mother is the beautiful Park Shin Hye, and her father... who is her father? All her mother ever told her was that he was in a popular group called SHINee. With the little information she knows Bo Mi begs her grandfather into letting her live with SHINee, Mr. Park gave in and helped her. SHINee was shocked to find a 5 year old girl in their house but took her in and they all became her father. But who is her real father will Bo Mi ever find out or is her father going to be a secret forever?