In the 1930s , a Japanese cult called The Temple of Hades was ordered to cooperate with the Japanese military to destroy China. They buy so many young children from poor family , who will be trained as a lethal killing machine and serve the Empire of Japan. One of them is Vajra , who was forced by his captors to fight for the food , and accidentally causing the death of his brother. Several years later , Vajra grown up and become one of the biggest killer in the Hades sect. Vajra escapes to China and joins Shaolin , where he receives spiritual enlightenment and determined to support China against Japan.

Zhou Xun interprète Xiao Wei, un démon, qui, pour préserver sa beauté et sa jeunesse, se nourrit de coeurs humains. Lorsque le général Wang Sheng la sauve des mains de truands et la ramène chez lui, les ennuis commencent : Xiao Wei tombe amoureuse de Wang Sheng qui est marié à Pei Rong et de nombreux hommes sont retrouvés morts avec leur coeur en moins… Pei Rong qui soupçonne Xiao Wei de ne pas être ce qu’elle prétend, va trouver Pang Yong en le suppliant d’enquêter et de tenter de prouver que Xiao Wei est un démon…