Veteran actor Jae-ha and idol star Young-woo are cast in a stage play called Unchain as Walter and Singer, respectively. Young-woo is initially uncooperative during rehearsals, arriving late and failing to display any interest in or enthusiasm for the play. Frustrated by Young-woo's flippant attitude toward acting, Jae-ha pushes him to change his behavior. Young-Woo becomes intrigued by Jae-ha's passion for his work, and devotes himself to his role, reading books Jae-ha gives him and accompanying him on outings to find props for the play. Jae-ha's girlfriend Hee-won begins to sense the connection between the two actors as they grow closer. Jae-ha himself is increasingly tense and agitated, confused about his feelings for Young-woo, until one day he accidentally hurts Young-woo during a rehearsal. Later, he encounters Young-woo in the empty theater and the two share a kiss which is witnessed by Hee-won. The two drive to the beach together, where Young-woo posts pictures of them on Instagram which prompt rumors about the nature of their relationship. They are soon found embracing in the car by Young-woo's manager and Hee-won. Young-woo is driven away by his manager as Hee-won confronts Jae-ha about his uality. Veteran actor Jae-ha and idol star Young-woo are cast in a stage play called Unchain as Walter and Singer, respectively. Young-woo is initially uncooperative during rehearsals, arriving late and failing to display any interest in or enthusiasm