Geological expert John Leighton naïvely introduces his flirtatious wife Emily to his boss, W. G. Griggs. Griggs sends John to the Graypeak district to prospect for quarries and is soon involved in an affair with Emily. While in the mountains, John rescues Enid Arden from an attack and she falls in love with him. Returning home John discovers the affair and leaves Emily. Emily and Griggs go to Europe to avoid a scandal and while there start divorce proceedings. But Griggs’ philandering ultimately costs him his life and Emily tracks John to Graypeak. Although she tries to win John back a fateful train ride clears the way for John and Enid to face a happy future together.