While continuing to help his classmates solve their problems, Humphrey, pet hamster of Longfellow School's Room 26, faces many surprises, like rolling in a hamster ball, a substitute janitor who might be an alien, and the possibility of Mrs. Brisbane retiring.

Humphrey the hamster and the students in Mrs. Brisbane's class get ready for the holidays and a special Winter Wonderland program.

Humphrey, the pet hamster of Longfellow School's Room 26, relates the ups and downs experienced by his human classmates as they begin a project to create a model town complete with houses and community services.

"Humphrey helps the students of Room 26 find a missing dog"--

When the Willows move into a new house, Celia, the youngest of four children, traps an enchanted hamster, who reluctantly agrees to grant the children one wish in exchange for his freedom.

Leo's new pet hamster escapes from its cage before Leo has even decided on a name.

After the last bell, classroom pet hamster Turbo becomes Super Turbo to fight evil, but he soon finds that he isn't the only super pet in town when he is forced to face an evil rat named Whiskerface.

Humphrey, the pet hamster of Longfellow School's Room 26, learns that his classroom is full of secrets, the most important of which is that a student will be leaving soon.

When a dog gets too close to Humphrey at the town pet show, Og the Frog saves the day, and Humphrey sees that having a great friend is the best prize he could possibly win.

"The students of Room 26 are doing reports about the jobs they want to have when they grow up--and Humphrey the classroom pet hamster helps aspiring magician Miranda show the class about her own dream job"--