An old New Zealand scientist invented a prism called "Sirius", which can stimulate human potential and form incredible superpowers. But this invention was soon targeted by a local underworld organization, who attacked the laboratory and killed the old scientist. In a critical moment, Sirius was taken out of New Zealand and brought to Hong Kong by the young man King Kong (played by Sam Hui) who participated in the experiment and the scientist's daughter Sally (played by Sally Yeh). After returning to Hong Kong, King Kong sought the help of detective Bald Man (played by Mai Jia), but the gang followed him and took Bald Man's wife, Superintendent He (played by Sylvia Chang) hostage. In order to save his beloved wife, Bald Man took his son and rushed to New Zealand with King Kong...