As the rest of the family sit around on a plateau, father and son team Oglas and Ogo decide to go on a hunting trip to the rainforest to fetch food for the hungry clan. Not surprisingly, the trip is a disaster full of misadventures, as Oglas and Ogo are not adept hunters. After they leave, a brontosaurus keels over dead next to the rest of the clan on the plateau, who then prompty feast upon it. Meanwhile in the rainforest Oglas and Ogo bump into a red-skinned deinonychus who beats them up with kung fu. They flee, only to bump into Ray the T-Rex, prompting more running. Oglas and Ogo escape Ray by jumping off a cliff but not before losing their clothes which Ray catches in his jaws. They land in the brontosaurus' rib cage and are trapped inside like a prison, naked, exhausted, beaten up and hungry, helplessly looking on at the rest of the clan who are soundly sleeping off their hearty brontosaurus meal.