American racketeer Jimmie Dean travels to England, where he assumes the identity of a Canadian whom he has been falsely accused of murdering. Jimmie is then forced to join the British army in the dead man's place. He falls in love with the Canadian's childhood playmate, Sally Briggs, and becomes a hero after saving an isolated English colony in China.
David Barr is the manager and chief designer of a British shipyard in decline. The shipyard is in financial trouble but Barr has a design for a new ship that will save them all. Can he get the ship built in spite of the opposition from his own bankers as well as the rival shipbuilders and their infiltrated militants.