Simon is a nine-year-old autistic boy who has cracked the government's new "unbreakable" code. This skill renders the new billion-dollar secret code vulnerable, especially if enemies of the United States should learn of Simon's abilities and capture him.
When guardian angel Seth -- who invisibly watches over the citizens of Los Angeles -- becomes captivated by Maggie, a strong-willed heart surgeon, he ponders trading in his pure, otherworldly existence for a mortal life with his beloved.
When teen-socialite Kelly Van Ryan (Richards) and troubled bad girl Suzie Toller (Campbell) accuse guidance counselor Sam Lombardo (Dillon) of rape, he's suspended by the school, rejected by the town, and fighting to get his life back.
Geeky teenager David and his popular twin sister, Jennifer, get sucked into the black-and-white world of a 1950s TV sitcom called "Pleasantville," and find a world where everything is peachy keen all the time.
The OSSA discovers a spacecraft thought to be at least 300 years old at the bottom of the ocean. Immediately following the discovery, they decide to send a team down to the depths of the ocean to study the space craft.
When some very creepy things start happening around school, the kids at Herrington High make a chilling discovery that confirms their worst suspicions: their teachers really are from another planet! As mind-controlling parasites rapidly begin spreading from the faculty to the students' bodies, it's ultimately up to the few who are left – an unlikely collection of loners, leaders, nerds and jocks – to save the world from alien domination.