A powerful bomb is stolen from a military unit and the magnetic KEY (a tape recorder that emits a certain sound that unlocks the bomb), that controls the lock falls into the wrong hands. French Secret Agente Roger Hanin is given the task of retrieving it and has only 48 hours to find it. He was hoping for a relaxing seaside holiday near Barcelona but ends up chasing bad guys who all double cross each other to get the key and are thus able to sell to the highest bidder. After some buildings are blown up and cars set on fire, they all end up in a car chase on an expressway. Certainly a fun movie to watch if you like Euro Spy films.