On the exciting day of the freshman club MT (membership training), Sunwoo discovers that the senior he’s been secretly crushing on… already has someone she’s flirting with. Burning with jealousy toward his rival, Sangyoon—a guy with a total delinquent vibe—Sunwoo can’t hide his annoyance. But while exploring a supposed haunted spot, Sunwoo ends up stranded alone together with him. They take shelter from the rain in a suspicious abandoned house… and Sunwoo becomes possessed by a ghost. “If you want to live, do exactly as I say from now on.” He didn’t know then. That he would end up sharing his life with this delinquent-looking guy…