A giant rebelled against the heavens. It was declared a devil and defeated. The immortal heart evolved into Sun Wukong. The heavens found him, and ravaged his home. He enters the heavenly kingdom, disguised as a human, seeking retribution.

A terrorist expert in explosives, whose gang has been dismantled, seeks revenge. He threatens to blow up a Hong Kong tunnel with hundreds of hostages. The policeman who has already beaten him once must stop him again.