A story between Yang Shi On, a woman who is able to see spirits after waking up from a 6-year long coma and Cha Gun Woo, a man who only believes in solid evidence. The two detectives come to understand each other as they try to help the spirits attached to objects at a lost-and-found center rest in peace. This drama will feature a love triangle between spirits and humans. Si Oh On's dead boyfriend Lee Hyung Joon will appear as a spirit, perfecting the supernatural romance with Si On and Gun Woo. Hyung Joon was an elite member of the police force, but lost his life following an unfortunate accident.