Humphrey, the pet hamster of Longfelow 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.

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.

"Matt Hunter is expecting the latest sword-and-fantasy video game, but he's in for a disappointment when he receives a hamster for Christmas instead. A hamster called Snuffles. A hamster that dies, but somehow keeps going. A zombie hamster that has his eye on Matt"-- Provided by publisher.

Mandy and James are in this year's school holiday show. During the performance, Honey the hamster escapes from her cage. She's last seen scurrying out into the snow under a holly bush. Mandy knows Honey must be found soon, or she'll freeze to death! Will the show go on, and will Holly be rescued?

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.

While Gerry is taking care of the class pet, Houdini the hamster, during spring break he escapes and she must don her thinking crown to find a way to lure him back to his cage.

Feline Madame Wigglesworth is outraged when her privileged position in the house is usurped by a mere dog, Grub, so she comes up with a plan to expel the humans and put the pets, namely herself, in charge--but their human-free realm soon dissolves into complete chaos as she and Grub and his lovestruck sidekick Honeybaked Hamster struggle for the presidency.

The Ham-Hams surprise one another with Valentine's Day gifts.

"Eleven-year old Sam befriends a hungry class hamster that undergoes a freaky transformation"-- Provided by publisher.

"It's going to be a busy day for Stanley! He gets up early to sort through all of the mail in his post office. Then he sets off through town to deliver it all. Myrtle, Little Woo, and Charlie all receive exciting gifts and letters. But will everyone be happy with what's in Stanley's mail bag?"-- Provided by publisher.