Joan Girardi has begun acting a little strange since her family moved to the city of Arcadia. No one knows that various people keep introducing themselves as God, and then giving the teenager specific directions to do things. Unsure of what God wants, and if she's even sane, Joan tentatively begins to follow God's cryptic directives, all the while trying to retain a "normal" teen-aged existence.

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 (resembling a giant spider with a lizard-like head and torso) 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.

Rapper/multi-millionaire P. Miller becomes the guardian of his sister's three children - all of whom need a father figure in their lives.