Maiku Hama, a private detective, has his office on the second floor of the Yokohama Nichigeki Theater.
In Koganecho, where he lives, there have been a series of bizarre murders targeting women.
Maiku was not interested in the cases, however when his girlfriend Yuriko is attacked, he is made a suspect in the murders. Avoiding police pursuit, he tries to find out the truth, but he gets himself involved in the crazy plan of the murderer...