Detective Yoshioka heads a serial murder investigation. When Yoshioka's own fingerprints and some of his personal items are found at the location of the murders and on the victim's corpses, he begins to wonder whether he may be the very murderer that he is pursuing… Even Yoshioka's cop partner Miyaji begins to suspect Yoshioka. Meanwhile Yoshioka is haunted by his own lack of memory and the fragments of the past that are still trapped inside his head. He visits Takagi, the police psychiatrist, and while Takagi's therapy seems to benefit him superficially, there is still a dark fog on his brain that will not disappear...
