Sehun and Krystal have been friends for as long as he remembers. Until one night, where he confesses to her only leaving him in regret. Krystal never had any intentions with him, she only wanted to stay as really good friends. Sehun takes it lightly as if he was joking but deep down he wishes he could vanish forever. To make matters worst, Krystal gets into a relationship which makes Sehun isolate himself from the world.