During the Qin Dynasty in ancient China, a heroic killer tries to murder the Emperor in order to defend his land. Fruitlessly, the killer's action prompts the Emperor to deploy his army to execute the killer's eight-year-old child. A proficient fencer intervenes and saves the young boy. The duo flees from the Emperor's army and sets out on a venture to transform the empire's fate. Their journey is marked by numerous companions and adversaries.