18 years old Lee Kimu grew up with his big brother, Jaejin in a large house. Their parents died in an accident 13 years ago, but their butler raised the two kids for 13 years. When they were finally old enough to earn their own money, Jaejin decided to join a band and he got accepted. But since the new band didn't have a manager yet, they decided to live in Jaejin's house for the mean time which he agreed to. Will the boys find a new manager and make a debut to the music business? And more over, what will happen to Kimu when she was suddenly kissed while she was sleeping?