You're going by a guy named CHUCK (No, Not chuck norris) who's a
Reality game show TIS (Terror In Reality) Motocros ex-champion
Spoiler for TIS:
The girl is infected with the zombie virus but there's like a cure for 24 hours (Zombrex)
So every 24h u have to give her some.
The most awesome thing about the game is that you can make crazy weapons combining them
You can even make a lightsaber!
Oh and well you can preatty much smash the zombies with anything you find...
Trailer:
http://www.youtube.com/watch?v=uUdA2VVNY3w
Pics:

Spoiler for Funny Pic i found: