When Sassoon, also known as "The Wolf” attempts to swindle Dore Baxter out of her grandmother’s farm Garry Lindaberry and the villain’s wife conspire to thwart him leading to a happy conclusion for Dore & Garry.

Pursued by three Indian priests after stealing “The Moonstone” a valuable diamond from the eye of an Indian idol Englishman, Hearncastle is found drowned, presumably by the Indians. Possession of the Moonstone passes to his friend Franklin Blake who presents the diamond to his fiancée. However it is stolen and suspicion falls on another girl who loves Blake particularly after she leaves a mysterious note at her suicide. Subsequently, a doctor discovers that Blake walks in his sleep and took the diamond himself while in that state, but then stolen and never recovered. At last, the thief confesses before his death with Blake and his fiancée reuniting.

Cowboy Mark West lives on a ranch with his sister Mary, who suffers from a serious spinal disorder. Flighty East Coast socialite Violet Ridgeway flirts with Mark while vacationing at the ranch but returns to her fiancée, Dr. Welsh, when she leaves. Mark has been working hard to earn money for an operation Mary, which Doctor Welsh and Doctor Boyd agree to perform without telling him how dangerous it is. When Mary dies Mark receives a letter detailing the doctor’s risk-taking, filled with vengeance Mark kills Boyd, but Welsh flees to safety. Mark is imprisoned, but Violet convinces him to marry her, satisfying a stipulation in her late aunt's will. Mark escapes taking Welsh and Violet hostage. They are set upon by a villain and in the confrontation Welsh’s cowardly act shows Violet Mark’s true worth and the pair escapes to freedom across the Canadian border.

While engaged in battle, Pierre Duval, a French soldier, stumbles onto the mortally wounded Count de Morave. Before dying, the count begs Pierre to deliver some family jewels and papers to the Vicomte Raoul de Reyntiens. At home, Pierre places the jewels in a box that also contains a necklace given to Margot, his wife, by the Duke D'Auberg. While stealing the box, Lazare, a war correspondent who witnessed Pierre's scene with the count, attacks and kills Margot. Found guilty of the crime, Pierre is sentenced to life imprisonment but is pardoned after performing a dangerous jailhouse rescue. Mavis, his daughter, who has been adopted by the duke, falls in love with the poor vicomte but is courted by Lazare, now posing as the Count de Morave. To win her love, Lazare gives her some of the stolen jewels, including the duke's necklace, but when Pierre sees the necklace later, he exposes Lazare and wins retribution.