23 years after meteors crashed into the surface of the earth. The virus like mass from the meteors have taken over the North American and African Continent. Humanity prevail and made giant cities protected by the virus mass and its creatures with giant walls. 2 brothers, Grimm and Fate, live in one of these cities. They struggle to keep a roof over their heads and have enough food for the week, having no parents and on their own in a world full of horrors, do they have what it takes to survive?