AllMovie

A private investigator is hired by a mysterious treasure hunter to track down the lost treasure of Marco Polo in director Mark Colegrove's purposefully amateurish tribute to the badly dubbed Italian cannibal sub-genre. Traveling to a small island off the coast of Argentina with his adopted son Billy, Jack comes into contact with a primitive tribe known as the Yamma Yamma. For years, mysterious recluse Alexis Kinkaid has lived peacefully among the savages, and he may hold the key to locating the lost treasure. But when the cannibals begin to stir, it's a race to unlock the island's secret before becoming the main course at their latest feast.