Apparently an Australian news outlet has their hands on the Alien Prequel script and they have shared some key points of the plot.
The main characters in this script are definitely the space jockeys (pictured above). This group of aliens travel from planet to planet and terraforming. But they don’t just try and change new planets, they also dabble in alien breeding. In fact, the space jockeys are even attempting to breed humans. Never mind that they have two human males in captivity that they force to “engage in sexual activity,” using mind control.
The mind-controlled aliens are known as “Growers,” and they are used as a biological tool to rebuild a planet’s atmosphere. This is also how the xenomorphs come into play. The space jockeys were using them as a specific type of grower.
The xenomorphs we’re familiar with don’t appear until the second half of the film. But Lance Henriksen supposedly does!
So the space jockeys look Avatar scaled, which would be easy to portray with people actors. But as brilliant as they are with biological breeding, they mind control two guys to bang?
No wonder their worker Aliens drones rise up and kill them right in the face.
The synopsis sounds dumb, but any plot can if you read it with enough snark. I just hope the prequel lives up to the first two films.