Dann Mulvey (William Scott), just released from prison, is falsely accused of murder. The real culprit is the least-suspected person, who makes a deathbed confession.
Adapted from the Fannie Hurst story of the same name, Mannequin is the story of Joan Herrick, kidnapped in infancy from her wealthy parents and raised by a slatternly slum woman. The film is still extant.
Because Dan McDowell is unable to operate the new mechanized fire equipment, he is retired with a small pension; his son, Johnny, quits school to work in the fire department; and his old horse, Bullet, is sold to a dirt-hauler. Dan is charged with stealing Bullet and is jailed, but he is cleared in time to give valuable aid in a fire that traps Johnny's sweetheart, June Rutherford.
Young Terwilliger, an orphan boy in New York City, "adopts" Old Archer, the caretaker of Gramercy Park, after the man is arrested for beating Terwiliger for picking a flower for his dead mother. As Terwilliger grows up, he falls in love with Helen Raymond, a pretty neighborhood girl, but finds a rival for her in Harvey Livermore. When World War I breaks out both boys enlist in the army and are sent to the front lines. Complications ensue.