The murder of the chief official of Kobe city's Customs triggers an investigation of a prostitution ring called the 'Yellow Line' that sells Japanese women. A hired assassin is betrayed by his organization, and kidnaps a woman who happens to be the girlfriend of a newspaper reporter.

Shigeru Amachi
as Kazuhiro Moroki

Yōko Mihara
as Emi Ozuki

Teruo Yoshida
as Toshio Mayama

Yōichi Numata
as Newspaper editor

Torahiko Nakamura
as Yoshihide Matsudaira

Jun Ōtomo
as Agawa

Ryūji Oki
as Tetsu

Baku Mizuhara
as

Mako Sanjō
as Yumiko Katsura

Katsuko Wakasugi
as Hotel Madame