During the Sixteen Kingdoms period, Qiao Shu [zh] army deserter Dik Ming-kei, who was chased by vampires in the mountain of Zu, is rescued by Master Ding Yan and becomes his pupil. When they were ambushed by the Blood Devil, devil chaser Siu Yu and his pupil Yat Jan came to their assistance. They managed to hold off the Blood Devil but they need to find the Dual Swords to destroy it.
Master Ding took the wounded Siu Yu to Celestial Fort and sought help from the Mistress, but he was poisoned by the Blood Devil and he surrendered to the Dark Force. Will Ming-kei and Yat Jan find the Dual Swords and destroy the Blood Devil?
In a 1991 Fangoria article by Tim Paxton and Dave Todarello, Zu Warriors from the Magic Mountain is referred to as "a film which freely intertwines Chinese myth and lore with Hollywood special FX and comic-book action. It's the proverbial rollercoaster of kung fu, magic, monsters, humor, tension, visual spectacle and gruesome bits."[2]
Craig Lines of Den of Geek wrote that Zu Warriors from the Magic Mountain "was a significant film for the Hong Kong 'New Wave' movement that revolutionized the industry in the late '70s", characterized by "young filmmakers [who] broke free from the traditional studio system to create weird, energetic and experimental movies".[1] Lines praised the actors' performances and the martial arts choreography, and noted the film's "warm, full-hearted message of kindness and acceptance".[1]
The film is considered an influence on John Carpenter's 1986 film Big Trouble in Little China.[1]
The U.K. release of the DVD by Hong Kong Legends features an audio commentary with Tsui Hark and film critic Bey Logan.
The Hong Kong release of the DVD by Fortune Star Media features the Cantonese version of the film's trailer, as well as an interview with actor Yuen Biao.
Paxton, Tim; Todarello, Dave (October 1991). "From Asia with Blood - Part One". Fangoria. No. 107. Starlog Group, Inc. p. 58. ISSN 0164-2111.