From prehistory of the map we know that the city were invaded by Aliens and now we need to get rid of them. You must destroy all of the spaceships floating in the sky and kill all aliens. Some of the spaceships will actually flying around and shoot.
How to install addons:
- Get the latest version of ES File Explorer
- Download .mcworld file
- Using ES File Explorer go to Downloads folder on your device
- Find .mcworld file and click to import it into Minecraft PE
- Open Minecraft Pocket Edition and look for map among your worlds