The world is at its end because of an apocalypse. Pet animals are turning into zombies. The only chance for humanity to survive is with an antidote. As funny as it sounds, you will be saving the world by driving an ice cream truck. You will have to carry the antidote while keeping it stable and cool. Take it to a lab, and protect yourself and the truck at all times.
Eight levels is what takes for you to save the world from a zombie apocalypse. Drive the ice cream truck while collecting power-ups and coins to buy upgrades. Make sure to keep your eye on the health of your truck.