Brainless

In a world where most of the human population has turned to monsters that crave human flesh and blood, there's a girl and her 5 yo sister living their normal boring life, when the infection hits. Alone and on their own, they try to make sense of what happened, unaware that there is danger on every step. Surviving in this new world, full of terror and horror, they make friends and enemies, along the way. But there's something more scary than the zombies...