A German spy is passing on information about the location of Allied ships in the neutral harbor of Goa, India, with catastrophic results. Unable to undertake a full military operation in the Portuguese stronghold, English intelligence brings out of retirement a crew of geriatric ex-soldiers, veterans from World War I, using their age as cover. These old soldiers are asked to take to the seas and pull off an unlikely undercover mission.

Gregory Peckas Col. Lewis Pugh
Roger Mooreas Capt. Gavin Stewart
David Nivenas Col. W.H. Grice
Trevor Howardas Jack Cartwright
Barbara Kellermanas Mrs. Cromwell
Patrick Macneeas Major 'Yogi' Crossley
Kenneth Griffithas Charlie Wilton
Patrick Allenas Colin Mackenzie
Wolf Kahleras Trompeta
Robert Hoffmannas U-Boat Captain