Spurred by news reports of SWAT teams searching the jungles of Papua New Guinea for a dinosaurlike beast, Josh travels to the little-explored South Pacific island nation to investigate sightings of an iguanodon near Tinganavudu, a remote village on the island of New Britain.

Before returning to the United States, Josh opts to investigate a second local legend, of a mermaidlike creature called the Ri, which has been reported in waters off the island of New Ireland.

The team investigates Chupacabra sightings in Chile. Meanwhile, a giant bird is reported to live in Papua New Guinea, the crew investigates.