Zombies have taken over the world and it seems a lost cause. But the survivor knows that they need to go on as life is precious. They must not give in or there would be nothing for their families. They are able to survive long in this zombie-infested world, but the supplies wouldn't last long. They need to go out to gather some supplies. Fortunately, they don't need to go on foot as they have a truck that can ram those undead. Any undead that would dare block the driveway is a sure dead zombies. However, the problem is that the truck won't last long if they don't take care of it. The driver knows that and so every survivors too. They need the truck for a long time and they won't want to lose it.
The idea here is to go as far as you can on the road. There are zombies everywhere and they would stop you to get to where you want to be. You would earn money from every zombies that you kill, but that would damage your truck too. You can have it repaired as you can grab some repair kit along the way. Aside from that, you can also grab some money and fuel. The money is used to buy some upgrades for the truck.