 This true story follows the exploits of a top secret British military mission to destroy Nazi radio ships in a neutral harbor during WWII. The daring plan is led by British Intelligence officers Col. Lewis Pugh ( Gregory Peck  (qv)) and Capt. Gavin Stewart ( Roger Moore (I)  (qv)). Since the ships are in neutral territory the British Military command, while encouraging the scheme, must deny any knowledge of it if it fails. Pugh & Stewart enlist the aid of retired officer Col. Bill Grice ( David Niven (I)  (qv)) & some of his former soldiers. On the pretext of being on a fishing expedition, these seemingly drunken old men in civilian clothing must board & destroy 3 Nazi ships, whose radio transmissions have resulted in Nazi submarines sinking allied ships. While Stewart arranges a diversion on shore, Pugh & Grice carry out the dangerous raid on and destruction of the Nazi ships.