John Payne portrays "Dick Lindsay/Robert McAllister," and finds himself obligated by pirate captain "Barclay" (Sir Cedric Hardwicke) to pose as the nephew of his enemy, "McAllister" (Francis L. Sullivan). The goal is to get inside McAllister’s seemingly impenetrable headquarters so that it can be seized. However, while undercover, he encounters “Christine” (Arlene Dahl), and after some initial difficulties, they begi…