Ellen Carson is a real estate agent who inadvertently cuts off a delivery truck driver while changing lanes on the freeway to hurry home. The truck driver turns out to be a disturbed man named Eddie Madden, who proceeds to chase after Ellen in an effort to run her off the road. Ellen in fear calls the 1-800 number on the back of his truck and lodges a complaint, which causes Eddie to lose his job, and he (being a grieving husband and father who earlier lost his family to a car accident) sets out to destroy Ellen's family and soon becomes fixated on Ellen and her teenage stepdaughter Cynthia and plots to have them as replacement family, by removing the head of the house, Ellen's husband and Cynthia's father Jim Carson.

L.A. real estate agent Kate Wooten gets a new lease on life when she learns that her new client, a mysterious and handsome man named Vlad, is looking for a house isolated in the Hollywood Hills where he wants to live and doesn't want to be disturbed. It doesn't take long for Kate to fall in love with her new client and to learn that he's a real vampire.

After a young boy is almost runover by a maniac on a highway, a re-encounter and confrontation by the boy's father with the driver sets off conflicts with a car full of maniacs.

Three young friends who are on vacation in Spain and a NASA scientist must join forces to save themselves and the rest of the world from an alien menace.