The first in a series of Japanese TV movies about a police detective who has adopted the dress and mannerisms of famous American TV detective Columbo, based on a series of novels by popular mystery author Yasuo Uchida.

One day, Detective Takemura Iwao, also known as Shinano's Columbo, becomes the first person to discover a dismembered murder case. At first glance, the case appears to be a simple murder caused by a financial dispute between an uncle and nephew, but Takemura, who is suspicious of this view, pursues the culprit with a dogged investigation in order to unravel the criminal's meticulous plan!