Chul-jun, a North Korean defector harboring an unspoken secret, endures profound loneliness in a world where he belongs nowhere. One day, he encounters Young-jun, who helps him face a reality he has never known. As they become friends, Chul-jun slowly opens his heart. However, the sudden arrival of the popular Hyun-taek stirs subtle waves of emotion between Chul-jun and Young-jun, driving their relationship into unexpected, drifting territory.