The naked body of schoolgirl leads the police to a teenage prostitution ring as vice & corruption explode onto the Italian streets in a blaze of machete-wielding fury.

When suspects in the case are killed by a mysterious stranger clad in motorbike leathers, the police realise that the trail of corruption goes all the way to the top, and set their sights on busting the case wide open. But as the body count rises, the crash-helmet-wearing motor-psycho colours the mean streets red in a bid to stop them.

Massimo Dallamano's masterful hybrid of giallo mystery and piloziotteschi thriller is interwoven with breakneck chase-sequences and a deeply cool soundtrack to create a landmark in 70s European cinema.