Have you ever had a ghost as a roommate? That's the situation that confronts Chanyang Jeong when a haunting turns into a homestay. The "ghost" in question is actually Jian Nam, heir to the Baekgyeong Group, who's currently in a coma after a suspicious accident. Jian needs to remain near Chanyang for three months to find out if he can wake up from the coma, so the two are forced to cohabitate. Can Chanyang uncover the truth behind Jian's accident, and endure living with her unexpected guest for three months?