9 years ago in 2108 earth was invaded by aliens.
An elite group of soldiers was created by the sole purpose of the invaders.
These soldiers were the best of the best . Unparalleled instrategy and skills.
The codename for this group where The Resistance.

4 years later, the last alien were finally defeated.
Though the zombie virus they created still spreading, as we have not yet find a cure. Those infected with the virus have remained in stasis till the cure is found.

The Aliens have returned without warning, it's still not clear why...

I just prey that they don't reach the main outpost. If them do, the human race will be erased.

This is Johny Rockit, close quarters combat expert. If you are listening to this, you are a resistance member