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.

After celebrating their first nine same-day birthdays together, Amanda and Leo, having fallen out on their tenth and not speaking to each other for the last year, prepare to celebrate their eleventh birthday separately but peculiar things begin to happen as the day of their birthday begins to repeat itself over and over again.

When orphaned eleven-year-old Pollyanna comes to live with austere and wealthy Aunt Polly, her philosophy of gladness brings happiness to her aunt and other unhappy members of the community.

Sasha Silver has been invited to attend an exclusive equestrian clinic the problem is, certain friends have been invited also and after the way things ended at Canterwood's Sweetheart Soiree, there's almost no line between friend and frenemy.

"Everyone is invited to a birthday party at her parent's candy store, except Stella Batts. She needs to figure out to be a pleasant hostess when she's not on the guest list"--Provided by publisher.

Twelve-year-old Greg, who has always been good at moneymaking projects, is surprised to find himself teaming up with his lifelong rival, Maura, to create a series of comic books to sell at school.

When Neptune tells Emily and her merman father and human mother to return to Brightport to try to make merpeople and humans work more closely together, Emily faces problems with old enemies, her new, half-merfolk friend Aaron, and a mystery related to a group of legendary lost sirens.

Sasha tries to keep her relationship with Eric a secret from the other girls, while Jasmine, a new student at Canterwood Crest, is revealed to be very competitive against the others on the advanced riding team.

When ten-year-old Newton dresses up as an unusual superhero for Halloween, he decides to keep wearing the costume after the holiday to help save townspeople and eventually his injured brother.

During a round of Truth or Dare, Abby Miller confesses her crush on Jake Chilson -- then receives a text message in the middle of the night warning her to stay away from Jake.