Steven, a practical joker, is tricked by his friends into drinking a strange mixture of chemicals that causes him to shrink, and he must make it through his house and the dangers inside to reach his normal size.

"Mickey is put in charge of his vacationing neighbors' cat, Bella. His best friend, Amanda, comes along to help out. All they have to do is make sure Bella has enough to eat and doesn't destroy the furniture. Seems simple enough. But Bella escapes from the house and is hit by a truck. Mickey feels awful. What is he going to do? Amanda has an idea to replace the cat with a look-alike from the local pet store, Cat Heaven. They find a cat that looks...