After receiving a mysterious dispatch that Napoleon's army is preparing an invasion, the Sea Lords of the British Navy fear an assault on England and need a special officer to uncover the destination of Napoleon's armada--a man who never stops: Marine Lt William John Hazzard. But Hazzard has left the Navy, vowing never to return. The Admiralty, however, knows just how to persuade him. They know where his missing fiancée, Sarah, is...and she's in danger.