Season 1

Season overview

At 32, temporary teacher Jang Gi-woo lost his chance to become a permanent teacher after being caught up in a school scandal. Afraid of getting hurt again, he hides all the feelings he cannot share with anyone on an anonymous chat app. Lee Hyeon-jae, a 21-year-old student who has been held back, is seen as a troublemaker by everyone. Yet a single remark from Gi-woo moves him deeply, leading him to secretly become Gi-woo's anonymous chat partner. Online, Hyeon-jae listens to Gi-woo's most vulnerable secrets; in real life, he moves closer to him step by step, challenging the forbidden boundary between teacher and student.