Julie Ellis is deeply involved with her high school sweetheart, Luke, even though her parents object that she has made a commitment at such a young age. That commitment only deepens when Luke becomes ill. Wanting to stay close to Luke and offer him comfort, Julie defies her parents' wishes to go away to a prominent school.
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.
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.
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.
On behalf of "oppressed bugs everywhere," an inventive ant named Flik hires a troupe of warrior bugs to defend his bustling colony from a horde of freeloading grasshoppers led by the evil-minded Hopper.
When a freighter is viciously attacked in the Pacific Ocean, a team of experts -- including biologist Niko Tatopoulos and scientists Elsie Chapman and Mendel Craven -- concludes that an oversized reptile is the culprit.