Charles and Chi, played by Andy Lau and Pak-Cheung Chan, embark on an adventurous trip to Mainland China, where they stumble upon an ancient cave believed to be the burial site of the famed martial artist Lung Gim-Fei. Their discovery of a mystical spell book leads to unexpected chaos, as they inadvertently release a long-slumbering princess (Joey Wang) and her loyal handmaiden (Siu-Wai Mui). Unbeknownst to them, the awakening also rouses the malevolent warlord Tien Chien (Wah Yuen), who follows them back to Hong Kong, setting the stage for an epic clash.