Her childhood friend, Kang Ido, left for Paris two years ago feeling like he was running away overnight and set on becoming a professional ballet dancer. Now he has returned. “Looks like you are finally taking interest?” “What are talking about?” “Then stop staring. You’re going to make me hard.” “What have you going hard? Are you crazy?” A perfectly toned body seen through a thin T-shirt and tights, an arousing gaze. During the banter of teasing, cautiousness and excitement bantering back and forth, Ido and Seoeon keep going back and forth with each other as their relationship slowly matures… Is their friendship destined to be unaffected?