A naked corpse was found that had its penis amputated on a heavy rainy night. As a result of an autopsy by a medical examiner (Naomi Oki), it was determined that the criminal was the same man as the unsolved continuous murder case since last month. Detective Yajima (Masato Furuoya) and Ishigami (Koh Takasugi) immediately start an investigation, but the case goes in a surprising direction.

Kyosuke Kozu (Masaomi Kondo), a university professor and a famous detective, is a big magic lover. He was asked to judge the Magic Competition to be held in Ito, and set out with his sister Nobuko, her lover's newspaper reporter Kenzo, and the brothers Shiro Kishibe. On the day, Shigeko Mizutani, who was supposed to play the guillotine technique, went missing, and she was found dead while her sister Yoshiko was taking her place. The suspects include Yoshiko, Shigeko's husband, Ryohei Mizutani, and her secretary, Yuriko.

A troubled architect weaves his way through numerous romantic situations in a search for true love and contentment.