Pidetta, a notorious French woman and leader of one of Paris' worst gangs of crooks, lives in a beautiful chateau which contains an underground palace. She reads in the papers of the arrival at the best hotel of Betty Hoffman, her mother and fiancé, an American millionaire. She decides to make Betty her next victim... .

After being wrongly dismissed from the New York City police department, police officer Larry 'O'Day (William Fairbanks) reveals an internationally-known detective John Granger (Lee Shumway) to be a cheap crook. He is promoted and reinstated and marries his ever-faithful sweetheart Nelly Egan (Virginia Lee Corbin.)

Lumberjack Anthony Briggs has lived alone in the Canadian North Woods ever since his wife took their daughter and ran off to New York City with Robert Lacey, the lumber camp foreman. One day he comes across young Indian chief Lone Wolf and his sister Na-ta-Le, whose tribe has been wiped out by a "spotted sickness", and adopts them. Years afterward Briggs' daughter, now a young woman, returns to lead a hunting party with her fiance, Lacey's son Reynard. Complications ensue.