Poppy, accompanied by her troublesome son Junior, his skunk friend, and Uncle Ereth the porcupine, responds to a summons to return to her ancestral home, Gray House, to save the mice there from destruction by a bulldozer.

Little Mouse and Big Bear live on opposite ends of the same road, and they both would like a friend. But every morning, Little Mouse and Big Bear pass by each other, unnoticed. Until one day, their eyes meet! It's a little awkward at first--as most new friendships can be--but soon enough they're sipping warm tea together in Big Bear's cozy home, and making plans to meet again the following Sunday. When a nasty storm blows into town will it wreck everything...

"Things are calm at last in Maple Bluffs. The evil manufacturer SmilesCorp is out of business, Hammie Rex is a new dad to three tiny mutant offspring (Stompy, Chompy, and Hatshepsut), and Sam Gibbs feels that he can resume normal life. But soon enough, things get weird. When Sam visits a toy store to buy Beefer a bar mitzvah gift, one of the toys comes alive and attacks Hammie and the babies! Who could be behind this latest diabolical scheme? Funny,...

Louie and his pet hamster get sucked through a strange portal into a bizarre new land where Louie has turned into a wrestler and Scooty the hamster has become Bear the giant bear.

Sam Gibbs and his super-strong tiny buddy, Hamstersaurus Rex, keep encountering creepy abnormal objects at their school, like a floating sports jersey and a runaway go-kart. Sam doesn t believe in ghosts, but he has to admit that the hauntings are getting weirder...and more dangerous. Could bizarre mutant animals be the cause? At Horace Hotwater, they often are.

Ellie Ultra has a lot of responsibilities as a superhero. So when the chance to become Hamster Helper for the class's hamster, Squeak, comes around, Ellie isn't so sure she wants to add another thing to her list. But her name is picked and now it's up to Ellie to make sure Squeak is taken care of. All is fine until a mishap in the lab happens and suddenly Ellie's not so big any more-literally! A tousle with the Ultra Shrinker makes Ellie three-inches-tall....

A little girl in a red cape asks for Princess Harriet Hamsterbone's help with a pack of weasel-wolves who want to eat her grandmother, but after meeting everyone, Harriet is not sure who to trust. --

When Wodney Wat, who cannot pronounce the letter R, gets a talking robot for his birthday, it turns out to be more than just a fun gift.

Sam Waters is desperate to have a pet. But his parents say that first, Sam must prove he's responsible. So he takes an after-school job in a pet store called Little Shop of Hamsters. To his horror, Sam soon finds that cute, little hamsters can become very UNCUTE monsters. Suddenly, Sam isn't fighting for a pet--he's fighting to survive! Could the souvenir he got in HorrorLand have anything to do with this?

Taking a turn caring for the class pet hamster, Marion is devastated when the hamster goes missing and she receives an anonymous letter in her locker with clues leading to a mysterious scavenger hunt.