Synopsis by Janiss Garza
Leslie MacLeod (Kathryn Adams) comes to England from the U.S. so that she can settle financial affairs with Lord Glenayr (Jack Holt), whom she has never met. She encounters Duke Lanzana (Fred Malatesta), who sees her as a way to pay off his mounting debts. He captures her and then heads to a nearby cape to steal a buried treasure that actually should belong to the MacLeods. Lord Glenayr gives chase, there is an underwater fight between villain and hero, and then the requisite clinch.