Charles Napier plays Hornsby, a recently retired FBI agent that goes to South America to find his former partner Mendoza. Rumor has it that Mendoza has become a criminal. Soon after Hornsby arrives at his former partner's house, Mendoza is killed by a gunman. Now Hornsby has to work together with local cop Rodriguez to find out who killed his former partner and why.
Armed soldiers, thirsty and lost, run into the mysterious Sheila, who claims to be able to guide them to safety.
The evil Queen Tenefi demands that a steady supply of young women be sacrificed to the God of Fire. Maciste intervenes and saves from this sacrifice a village's women including the beautiful Antea. Maciste then becomes involved in an effort to restore to the throne of Memphis its rightful ruler, Prince Iram.