Young Mary Lehner is deceived and abandoned by Ralph Moore, a manipulative social climber. Mary, daughter of a blacksmith, falls for Moore while he's taking advantage of her father's hospitality. After Moore leaves her pregnant and heartbroken, she flees to the city, faces hardship, and eventually gives birth to their child. Meanwhile, Moore, now engaged to a wealthy woman, experiences a night of drunken debauchery and insults, ultimately leading him to a deserted house where he encounters Mary again. Seeing her and learning of her suffering, Moore finally recognizes his obligation to her and their child. They reconcile and Mary returns to a respectable social standing.