Nam Woohyun is just a college student beginning his first year. Things are running smoothly until he meets a boy by the name of Kim Sunggyu. Just when he feels as if he'll lose his sanity, something extraordinary happens to the both of them in an accident while taking a bus to the market and his life turns upside down in a matter of seconds. The accident leaves him with a disorder that splits his personality in two. One personality falls head over heels f