When the Falcon (Tom Conway) and his sidekick Goldie Locke (Edward Brophy) rescue an exotic Brazilian beauty (Madge Meredith) from kidnappers, they find themselves caught up in a deadly international conspiracy!The girl's uncle has perfected a formula for creating industrial diamonds - a priceless secret that ruthless gangsters are well prepared to kill for. In a desperate race against time, the Falcon and Goldie must jump a train from New York to Miami and deliver the formula to a friendly scientist. The gangsters are closing in fast - and the Falcon is in for one of the greatest adventures of his crime-busting career!