Everywhere you go there are zombies, as if it is like a zombie safari. No one knew what happened, but it just came and soon everyone was infected. You are one of the few survivors and you need to go to a safe zone for obvious reasons. There is no one to help yourself, so you need to rely on your own guts to be able to get there. There will be zombies trying to eat you that are waiting on the road and all you can do about that is to fight your way against these undead hordes.
The idea of the game is get to the safe zone, but hordes of zombies are awaiting for you in every step of the way. You are equipped with a pistol. There are some money that are scattered on the road and you need to get them. You can use the money to buy some upgrades or a new gun. The zombies will get tougher as you progress in the game, but that is where you will need some new guns. Each level would have a different objective and you need to fulfill the objective to be able to advance to the next level.