This terrific tale tells of Posy, a Plateosaurus who is known for not sharing anything with anyone – even her friends. One day, a new dinosaur called Malik moves into the desert who is just as selfish as Posy. He challenges her ownership of the bridge. The other dinosaurs hold a competition between Posy and Malik to decide who is the biggest and best but the result is a draw. When an even bigger dinosaur enters their territory, will the two selfish dinosaurs join forces to save their land from being taken over?