The Zombie Apocalypse 2: Aftermath takes place in the same universe as the prequel did. But this time it's the aftermath of the apocalypse. If you feel like you're done with The Zombie Apocalypse 2, and want to try something new, this is the map for you.
Even though the zombies are defeated, you still have to deal with the living. Some of them are still not friendly, at least not the newest groups; The Legion & The Conquerers.