A journalist named Lee Custler (William Katt) is out jogging when a flying object passes behind him and crashes. Sheriff Joel Armstrong (Collin Brock) picks him up and they go to check it out. They find an abandoned caravan close to where the object crashed. As they discover the object and realize it is a spaceship, an Alien emerges. The Alien then chases them, after which Lee flees to the car. However Armstrong makes a stand, trips, falls and is killed by the Alien that then leaves. A terrified Tammy finds Lee and they call the local authorities but their car is destroyed by the Alien.
They run to a local café where they meet Hilary, Javier, Figgus and Marcy who do not believe them. Together they go back where they find Garrison wounded and the other passenger gone. Garrison says that everyone else died. The Alien then appears and kills Marcy, and while the others flee it fights a cyborg-like Hunter. The group decides to go to Valentines, the local hunter, through the sewers. All except Javier, who is killed by the Alien, make it to Valentine’s and his daughter Freckle’s house where they call for the support of a local paramilitary team. Valentine attempts to kill the Hunter, only to be nearly killed instead, but he makes it alive.
The group then splits up: Valentine and Lee go to meet the paramilitary force while Tammy, Hillary, Freckles, Garrison and Figgus try to escape through a set of tunnels. Garrison gets lost in the tunnels and killed by the Alien but the others make it to the hunter’s ship to their dismay. There they find a second Alien that’s nearly dead and figure out that to get rid of the Hunter they need to kill the Alien and take a ray gun from the ship. Lee and Valentine find Two Fingers, Marty and Styles, the paramilitary force, and go to find T and Lexin who are in the woods. But they are already dead and the Hunter kills Marty, and kicks Styles away flying right near the Alien who kills both him and Valentine, who tries to save him.