A large spider from the jungles of South America is accidently transported in a crate with a dead body to America where it mates with a local spider. Soon after, the residents of a small California town disappear as the result of spider bites from the deadly spider offspring. It's up to a couple of doctors with the help of an insect exterminator to annihilate these eight legged freaks before they take over the entire town.

Three pets (Chance, a young dog unfamiliar with the world; Shadow, an aging, wise dog; and Sassy, a snobby cat) are left behind when their family goes on vacation. Unsure of what happened, the animals set out on a quest to find their family. This journey across America is very dangerous and the animals risk never seeing their masters again. The group of pets travel across forested mountains and areas of wide-open countryside, while their family searches for them in the same areas.

Troy is offered a job at Ryan & Sharpay's country club and ends up landing jobs for Gabriella, Chad, Taylor, Kelsi, Jason, Martha and Zeke. He is then introduced to Sharpay's parents and realizes that Sharpay can land him many opportunities and even a basketball scholarship. Meanwhile, while Troy starts hanging out with the rich folk, Chad is worried that Troy will forget his friends. Gabriella feels as though she is losing Troy to Sharpay. In the end, Troy will have to learn how to think about...