Having to hide his true feelings, Chae-ul was resigned to just looking from afar for a long time. But then the subject of his affection, Chae-heon, passed away. While trying to hold on by pretending to be unbothered, Chae-ul breaks down. But a familiar silhouette appeared in his blurred, teary vision. Chae-heon is back from the dead. But his memories, gaze and even temperature are all different...? What is the identity of the beast in this perfect shell, known as Chae-heon? A man and a beast. The breath-taking story of two men living together."