Not your average dystopia

A The world is in shambles, society has fallen apart, an airborne virus has turned a massive portion of the world population into blood thirsty, flesh craving zombies. Two teenage girls are separated from their parents in the first wave of the apocalypse and will go to any lengths to find them. Sounds pretty serious huh ? Well listen to their philosophy
"Just because it's the end of the world doesn't mean we can't have fun."