Produced by the highly acclaimed Michael Balcon, the story revolves around Robert, the son of the owner of a musical instrument factory. He is in love with Vera, one of the factory workers, who is unaware of his position. So when she jokes one day that she would love a Rolls-Royce, Robert makes sure that she gets one. Then he decides to raise her salary out of all proportion to hint at who he is...

A gang of four would-be robbers plans to steal a fortune in currency hidden aboard the "Flying Scotsman" in a railroad stateroom by cutting through the wall of the adjacent stateroom, but find themselves up against numerous unexpected drawbacks, including interference by their fellow passengers.