Sam fart, and Lexi Blake are best friends. They have been since they were three. They visit Horrorland. They go to a restaraunt in the theme park called The "Spear-It Cafe". There they find a cook named Chef Belcher. They have a horrible experience at the resturant involving shrimp. They run to the Chiller house. Sam who wants a pet gets a insta-grow pet toy. And a cell phone that carries candy. When Sam,and Lexi return to their homes with free toys they got at Horrorland they are ecxited when they learn a "Little Shop of Hamsters" just opened. They meet a man named Mr. Fitz who owns the shop. Many weird things hapen for a while to Sam, and Lexi. For one:The hamsters turn agressive, such as:The insta-grow pet toy turns huge. Finally he fights the angry hamsters who have eaten all the candies. Sam still thinks it is the candy turning them crazy. They eat the grow pets. And turn huge. Sam also eats a grow pet. The have an epic duel. Sam finally wins. He later discovers that Mr.Fitz was evil. And he tells Sam that the Vito Vigor water they were being fed was a liquid that turns things evil. He is held hostage by Fitz. Because he wants an insta-gro pet to make giant evil hamsters. Sam escapes with Lexis help. Lexi had drank 10 bottles of Vito-Vigor. She bites Sam. Then an epiloge chapter starts. It tells you that Sam ends up way back at Chiller house. Chillers evil plan is to kinap some kids.