 A New York anthropologist, named Professor Harold Moore (Robert Kerman), travels to the wild, inhospitable jungles of South American with two local guides to find out what happened to a documentary film crew which disappeared nearly a year earlier while traveling into the same jungle, called the  Green Inferno  to film a documentary about reputed cannibal tribes. After a long search and encountering a few primitive tribes, Professor Moore finds the remains of the crew and several reels of their undeveloped film. Upon returning to the USA, Professor Moore views the film in detail featuring the travels of the director Alan Yates (Gabriel York), his assistant Faye Daniels (Francesa Ciardi), and cameramen Jack Anders (Perry Pirkanen) and Mark Tomaso (Luca Giorgio Barbareschi) venturing into the jungles where the inexperienced, street-wise film group, after finding the indigenous tribes to docile for their film, decide to push them for kicks, with drastic consequences.