Laura Ward a selfish girl steals a large sum of money, her twin sister Agnes is mistakenly accused of the crime and sent to prison. Meanwhile, Laura abandons her sweetheart, alcoholic architect Richard Leigh, to marry an elderly millionaire named William Benedict, but she soon renews her affair. When a detective catches the lovers together, Agnes, just released from prison, agrees to pose as Richard's mistress, thereby saving Laura's marriage. Through Agnes's influence, Richard is regenerated, and the two eventually marry. Later, however, Laura reappears, and Agnes finds Richard drinking and embracing her. In a rage, William shoots and kills Laura, but Agnes forgives her erring husband and takes him home.