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.
Demon hunter Chen Xuanzhang (Wen Zhang) believes that he can purify any demon through love. However, his belief is shaken when his attempt to defeat a demon fish ends in a family’s death and a victory for violent demon hunter Duan (Shu Qi). After getting encouragement from his master, Xuanzhang soldiers on to hunting down a demonic hog with the help of Duan, who has fallen in love with Xuanzhang. Despite help from other demon hunters, the hog gets away. As a last resort, Xuanzhang and Duan turn to the help of Sun Wukong (Huang Bo), who has been imprisoned for five centuries for his crimes in heaven.
In Shanghai, China in the 1940s, a wannabe gangster aspires to join the notorious “Axe Gang” while residents of a housing complex exhibit extraordinary powers in defending their turf.