Flavio (
Fernando Poe, Jr.) is a "Panday" (or blacksmith) whose village and land are under the reign of the tyrant Lizardo (
Max Alvarado). Flavio is forced to brand innocent children every night with Lizardo's mark by the head of Lizardo's men in the village, Pilo (
Paquito Diaz). One day, Flavio's predecessor as Panday, Tata Temyong (Lito Anzures) finds the legendary "Black Book" that supposedly tells how Lizardo can be defeated. Later that night, a meteorite lands in a nearby field. Based on a prophecy in the Black Book, Flavio and Tata Temyong then use the meteorite and an old bell to create a magic dagger, the only weapon that can defeat Lizardo. After finishing the weapon, Flavio hunts down Lizardo's men in the village. Flavio then brands them before setting off with Tata Temyong, his young apprentice Lando (Bentot Jr.), and Monica (
Liz Alindogan), a woman he had saved from Lizardo's men, to defeat the evil tyrant. Flavio and his companions soon come across a seaside hut where they believe Lizardo dwells. Instead, it is home to one of Lizardo's henchmen, a wizard. Flavio defeats him, but soon afterward, they are attacked by
siyokoy (mermen) that are driven away when Flavio's dagger hums. When Pilo and his men arrive seeking revenge against Flavio, they attack and eat Pilo and his men instead. Later, Flavio and his companions are attacked by
zombies in a forest. Tata Temyong and Monica end up separated and captured by Lizardo's men. Elsewhere, Lando finds refuge in a hut haunted by an
aswang, and after a chase, Flavio finds and defeats it with his dagger. Tata Temyong and Monica are then brought to Lizardo's fortress. After hearing of Flavio's quest from Tata Temyong, Lizardo challenges Flavio to a duel in the desert. Lizardo brings Tata Temyong, Monica, and all his slaves to witness the battle. Lizardo first orders his men to attack Flavio, who, though vastly outnumbered, defeats them after his dagger transforms into a sword. Lizardo then faces Flavio himself, only to rapidly age every time Flavio hits him. Flavio ends the duel by stabbing Lizardo in the chest, who dies and fades away. With Lizardo defeated, Flavio leads his companions and the former slaves to freedom. ==Cast and characters ==