The tribe's best hunters are losing stamina: they can't even catch dodo birds any more! Pitt convinces them to get some exercise by running after an inflated skin. Soon, he has to make up rules, and sport is born for the first time in human prehistory! The thing is this sport craze gets quickly out of hand: nobody hunts any more and the dodo birds are gorging on the village winter stores! Will Pitt end this sport fad before the tribe becomes exhausted (and extinct!)?