Is that it? The great shocker? They tell you that in the Alien novels. Also for possible future film spoilers. The Earth has been over run by Aliens. Remnants of humanity is scattered to the stars, and we have a moon base where secret experiments are conducted in order to try and control Aliens. Apparently there are positive results in taming the Aliens. Interestingly some humans are still alive on Earth as fanatics, worshipping the Aliens, sacrifices etc... bizarrely the Aliens are complacent with these crazies living on Earth and don't eat them all. A human has nightmares, apparently the Queen of Queens Alien exists and is communicating to her. A daring plan is formed by a rag tag band of humans and Ripley (yea I can't remember how she's alive again) to find the Queen of Queens, capture it, bring it to Earth to a preset location where there were undetonated nukes. 99% of Earth aliens swarm to see the mommy of moms (apparently this momma is massive!) Nukes go boom, Earth can be cleaned up of the remaining Aliens. Oh and the nutcase running the moon base conducting the experiments? It turns out the aliens were just playing him, you can't control those beasts. Forward some years, Aliens are still on Earth, we harvest their nests for the Jelly from the eggs. I'm sure I've missed out some interesting bits.