You were living overseas and at 19yeas old, you came back to seoul to pursue your idol dream. At that time a popular idol group Seventeen is the reason why you came back to Korea to be an idol. You : Oh Young Jung , an exchange student at seoul art collage in Seoul. Wonu aka wonwoo A perfect student , love by all student and Teachers. (Perfect student model) but in sch, everyone know him as the perfect wonu sunbae. But without his glasses , he was actually a member of Seventeen and no one knows . Except for you who is very observant. Keeping a secret that wonu is Wonwoo? What bets are there?