Jung Sun Woo can’t help feel saddened that his first love is interested in someone else. A producer from JDC scouts the school for a band battle, and sets up a rematch between the Color Bars and All For One, but Yoon Sul Chan has his group‘s comeback to worry about. ‘Adam’ ahjussi (Han Ji Woong)’s past is revealed, and Yoon Sul Chan confides in Min Se Yi about how his friendship with Jung Sun Woo became tarnished. Min Se Yi makes her decision between Yoon Sul Chan/Jung Sun Woo.