Inspired by a true story, in 18-century China a young girl lusts for revenge. Imploring the spirit of the White Crane to guide her boxing, Fang Chi's quest to destroy the dark sorcerers of the Serpent Cult takes her into a world far stranger and more dangerous than she could possibly have imagined. This begins a journey of violence, mysticism and transformation that leads her to become one of the greatest martial artists of her, or any, generation – leaving a legacy that could save the world... or destroy it.