Kwok Sau-yuk fails to ward off the advances of Scholar Four Poisons while mourning the murder of her husband. Master Chung comes to help and asks Kwok's son Chan Lam to look for his daughter Siu-chui before dying. Hurled into the Blood Pool, Chan chances on Ng Yau-nin, a victim of the intrigue hatched by his wife Ho Yim-wah and her lover Oh Yu-kan. Ng bequeaths to Chan a sword, and the Book of Blood Devil Moves unearthed from the cave and entrusts his daughter Yu-ying to his care. Having mastered the art, Chan emerges from the abyssal waters and becomes the 'Little God of Hades.' He is soon kept under lock and key by Oh who wants the Book of the Yellow Emperor. Treating Chan with a antidote, Yu-ying escapes with Chan after learning his father’s intrigue, only to be hit by a pang of loss and agony upon Chan's reunion with senior master Lee Kei and Siu-chui, his betrothed fiancee. Instigated by Oh, Chan finds himself confronting members of the seven leading martial sects…

Her mind deluded by Elder Three Unsurpassed, Ng Yu-ying is about to surrender the captured Chan Lam to Oh Yu-kan and Ho Yim-wah when his senior master Lee Kei comes to save the day, warding off the conspirators. Restored to sanity by the antidote delivered by her mother, Ng bids a silent farewell and pleads to be made the protege of Black Raksha. With Fairy Crimson Pearl leading the way, Chan rescues Chung Siu-chui and Chor Ling imprisoned at the White-bone Sect and survives the bombings orchestrated by Oh but finds himself cornered by beguiled members of the seven leading martial sects. Ng dons a mask and teams up with 'Little God of Hades' to break the siege, pursuing their nemesis to the Fiery Fire Sect where Chan and cohorts finally eradicate Scholar Four Poisons and Oh, the latter confessing to the murder of Chan's father at his last breath. Ng wields the Raksha Order to avenge her father's death, perishing together with her mother.

Book Without Words is a 1965 Cantonese martial arts film directed by Chan Lit-Ban and starring Cheung Ching.

Police Commissioner Fong (Roy Chiao) enlists the chivalrous female bandit Muk Lan-fa (Suet Nei) to retrieve the latest gadget that emits deadly laser beam and its protocol before it is smuggled out of Hong Kong.