A cold-blooded cop (Fabio Testi) goes undercover to take down an international drug syndicate, but when Interpol agent (David Hemmings) joins the investigation, the case takes a deadly detour into depravity and violence. Can the two tough detectives trapped in a criminal underworld stay alive long enough to ignite a citywide massacre?. An Italian policeman goes undercover to break up an international heroin smuggling ring and butts heads with a hot-tempered Interpol agent assigned by his agency to do the same task.
