Koo, an insurance investigator, is sent to make enquiries regarding a case of accidental death. He is surprised to learn that the victim is the same ghost Yu  who has spoken to him the night before. Under curiosity, Koo is fascinated in working on the case. One night, Yu's spirit appears in Koo's apartment, her beauty and pleasant personality intrigues Koo. Koo even leaves his wife Ivy and get involve into a romance between man and a spirit. Will Koo and Yu be reunited or will Yu remain, as always, Koo's esprit d'amour?