Fay: A Warrior's Beginning

Fay WAS as average 14 year old human girl living in normal 21st century world until that fatal day... Human-like creatures started to appear, most people would call them zombies since if you got bitten/scratched you would turn into one of them. Slowly nearly the whole city got infected except those who were lucky enough to have escaped to the forrest like Fay and her big brother Calvin... Something happens to Fay and Calvin disappears... What secrets will Fay discover?