Apocalypse Rising

It's a normal school day, all of the pupils at Comp are working hard, until their school is attacked by the most dangerous criminal organisation,Cirque du freaks. They roam the streets, causing mischief and not even asked why. The kids are taken to a military outpost in the Mountains, miles away from there home town, Wickersley. When they escape they discover a life changing event. Everyone over the age of 15 has turned into some sort of mutated zombies. The only difference is, there not undead. Only a few stages away...