A judge who had taken part in the gold rush of 1849 hires an acting troupe to recreate the experience in this rather fanciful silent Western. The make-believe turns serious when a real gold mine is discovered nearby and a local girl is kidnapped by a nasty gambler.

Widow Margaret Dennis, unaware of the abusive nature of Oliver Cathcart, agrees to become his wife. Among other cruelties, Cathcart has ruined the Taylor family in a bad business deal, causing the death of Mrs. Taylor, turning Mr. Taylor into a worthless drunk and embittering their son Raymond, who swears revenge on Cathcart. Margaret's son Jim, learning of all this, forces his mother to choose between him and Cathcart.

James Gordon, Sr., owner of the Gordon syndicate, dispatches his roughneck son Jimmy to investigate why production has fallen off in his opal mine on an island off the coast of lower California. After an argument with his fiancée, socialite Lucy Andrews, Jimmy leaves for the island where he is met by Juan, McCool's servant who, along with Jasper Sneedham, has been cheating the company. On the launch, Juan tries to eliminate Jimmy by hitting him over the head, but the lad escapes and swims to shore where he is rescued by Sneedham's stepdaughter Nadine. Nadine takes Jimmy to the hut of mine foreman Fred Haimer, the only honest man on the island.

Robert "Bob" Wesley horrifies his father, Admiral John Wesley of the Naval Advisory Board, by failing his examination at the Annapolis naval academy. Bob seizes the chance to redeem himself, however, when he overhears Hanson, the butler, plotting with German agent Count Von Ornstorff to deliver his father's plans for the Atlantic coastal defenses to German Baroness Von Hulda. In Baltimore, Bob meets the baroness' ship and, with the aid of an old college professor, makes her his prisoner. Having impersonated a woman in the college play, Bob disguises himself as the baroness, rendezvous with the spies, and obtains the plans.

This tells of a pretty miss, expelled from a girls' school, who goes in for a harmless adventure. She poses as a slum girl and is taken in tow by a snobbish society girl, who at first befriends and then tries to impose, upon her.