Lo's Film (H.K.) Co.

The story is about two explorers who invade a temple in the dark of a jungle. They find a mummy, remove its brain, and return to the mainland. The blood and fluid from the brain are used in black magic rituals that result in a series of bloody murders throughout the city… committed by the brain!

The Abbot of Po Chi Lam is about to die and therefore name a successor. The aggressive and hot-tempered San Sau seems likely, but the Abbot favours the quieter Wai Nam. On his deathbed, the Abbot entrusts the temple's surplice to Wai Nam and sends him out into the world. San Sau and his allies are determined to get it back.