The third sequel to the movie Alien picks up with the ship from the second movie on its way back to Earth. Somehow some Alien eggs have been smuggled aboard the ship. They really don't explain how that happens, they just show it during the opening credits. When one of the eggs hatches it causes malfunctions in the ship and the crew compartment is jettisoned into space and crashes on a nearby planet. This planet was a former penal colony with a lead mining operation and is now populated by former prisoners who have formed their own religion and who volunteered to stay behind. They were all sex offenders and didn't trust themselves to return to earth. The society of the ex-cons is more interesting than the Alien. One of the Aliens latches onto a dog and incubates in the dog. The new Alien takes on characteristics of the dog so it can run fast. It starts to kill the ex-convicts and they have to figure out how to kill it. There's an interesting twist at the end but some of the middle part of the movie is slow. The action picks up when they are hunting down the Alien. I also saw this movie in Midwest City, OK. It's a good movie but not as scary as the first movie and has less action than the second.