Black Line

First film in Teruo Ishii's Line series.

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.

It tells the story of a couple who fall into a trap set up by a sinister organization. One of them is a guy who is framed for the murder of his lover. The other is a woman pick-pocket who is entrapped by the organization's schemes involving their crimes. Fate places them together, and they start to investigate the prostitution ring run by the organization...

Two young crooks who scam betters in the race track are employed by a yakuza gang called the Shigemori Syndicate to steal a shipment of handguns from a rival gang. Somewhere in the process they find themselves on the run from their own gang and one of them becomes himself romantically entangled with the boss's girlfriend. An ambitious underboss of the gang offers them a way out if they murder the previous boss but things don't turn out as planned (for everyone).