We find ourselves two hundred years after a holocaust. The survivors have organized themselves into different city-states. Sálvat is a nomad who has lost his memory and travels the world looking for clues to his past. While doing so, he must face hordes of motorized assassins, war robots and strange supernatural powers. Always accompanied by his faithful robot motorcycle, Sandy.
The Mega Rally continues with the drivers and their bikes heading into the desert. Finsen wants to win and is willing to break the rules to achieve it. Sálvat and his robot bike, Sandy, will try to stop him.