The background here is England's war with France and the treasonous Channel smuggling. Ousted from the navy with a smirched reputation in 1782, Capt. Appleton goes to the house he inherited from his Uncle Roger. There on the Dover cliffs, he and his daughter Margaret piece together the activities of the dead Roger and unwillingly become part of the smuggling picture. Their adventures make a period piece of earnest intent, scorning devices for a straightforward story.