The story revolves around amazing creatures - half dinosaurs, half trucks. They exist in a fictional prehistoric era, the Mesozoic era. By a random twist of fate, they all ended up in the Crater, which they now consider their home. However, this place cannot be called peaceful and quiet. Dino-Trux, a large Tyrannosaurus excavator with a terrible temper, is convinced that he is the rightful owner of the Crater. But Ty-Rax, a kind-hearted Tyrannosaurus, is ready to confront him.