Steam clouds rise off the water as a ferry approaches a jetty in ancient China. Onboard is Hudan, one of the mysterious Wu who reside on the sacred mountain of Li Shan. The Wu have been living in isolation for decades, while the arrogant Shang emperor and his enchantress have ruled the land. It has been a terrible time for the common people and the noble Ji brothers - Dan and Fa - are keen to bring the emperor's reign of terror to an end. They are told a Wu prophecy has predicted the fall of the emperor, but first they must journey to Li Shan to learn the truth.