Who makes me? Is it me or you?

Here <An Absurdity of Things> happens.

A dim moonlight comes into a room. In silence, Kang, In-Cheol calls the police to report that a man died in his place. Detective Choi, Chang-Shik who is investigating a series of disappearance comes to him due to his report. Kang, In-Cheol says that he had no choice but killing the man because he broke into his place. However, there is no dead body which should be there. Is this his imagination or a simple trick? The truth of the incident slowly comes into light...