San Jose, California, 1906. Isolated in her labyrinthine mansion, eccentric firearm heiress Sarah Winchester believes that she is being haunted by the souls of those killed by the guns manufactured by her company.

At the heart of this true story is Damien Oliver, a young jockey who loses his only brother in a tragic racing accident, hauntingly reflecting of the way their father died 27 years earlier. After suffering through a series of discouraging defeats, Damien teams with Irish trainer Dermot Weld, and triumphs at the 2002 Melbourne Cup in one of the most thrilling finales in sporting history.