Separated since birth, twins Violet and Daisy White are unaware of each other's existence. Violet, the idol of her indulgent father Harry has everything her heart could desire while Daisy, reared by her indigent mother, is poorly clad and underfed. This fragile child of the slums is not aware that John Bent possesses certain papers which confirm her true relation to Harry White. By hiding from Daisy's father the truth of her existence, Bent is able to manipulate the twins to his own best advantage; they become his pawns. After hiding Daisy away in school, he substitutes her for Violet, whom he has forced into marriage, when the latter dies. Then he disposes of Daisy by declaring her insane and placing her in an asylum. It appears that Bent will win the game until Bob Anderson, who is in love with Daisy, comes to her rescue and checkmates the black knight.