Richard Delancey, inadvertently embroiled in Liverpool labor riots, sidesteps punishment by volunteering for the Navy. Ranked as a midshipman, he is no sooner aboard than his ship sails for the port of New York. But when the events of the American Revolution and the ongoing hostilities between England and France send him back across the sea, Delancey finds himself instrumental in defending the Isle of Jersey and, later, the Rock of Gibraltar.