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.

When SAS Captain Peter Skellen is thrown out of the service for gross misconduct due to unnecessary violence and bullying, he is soon recruited by The People's Lobby, a fanatical group aiming to hold several US dignitaries hostage. But Skellen's dismissal is a front to enable him to get close to the terrorist group. Can he get close enough to stop the Lobby from creating an international incident?