The never-ending struggle of an Egyptian Narcotics Bureau unit. This time around,the murder of a rich Arab named Bashiri leads colonel Yussef Bey and his right-hand man Lieutenant Mourad to a berthed ship in the harbor of Port Saïd. An amazing quantity of hashish is found on board and two suspicious passengers, Humble and Lombardi, are kept under surveillance. But Humble, whose real name is Rico Pavlis, manages to run away after killing Lombardi. Yussef decides to set a trap for Pavlis, his brother and the other traffickers...