Hugo Reid loves and is engaged to the fair Irene. Warned by his father that insanity runs in their family he chooses to break with her without sharing the reason why. Driven by his loneliness and despair, Hugo goes back to his former flame, Hazel Hamilton, a lady of loose character. Irene sees them together and hurt flees with Hugo in pursuit. At first anxious to win her back, Hugo eventually tells all to Irene’s mother, leaving the house for good. Shortly thereafter he falls into madness.