Yoon Dam is able to see ghosts after the passing of his grandpa, a male shaman. In order to stop seeing ghosts, one must rely on the power of a goblin. One day, Lee Dohyun shows up, claiming that he is a goblin. After that, every time Yoon Dam is harmed, wounds show up one by one on Lee Dohyun's body instead. Mired in this inexplicably bizarre situation, Lee Dohyun starts to show interest in Yoon Dam. "Seriously, why don't you just try becoming my tutor?" The two, tangled up in this bizarre incident, come together in the pursuit of their goals, when...