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.

"Rose Alice Anders is Little Luck. Lucky to be born into the Anders family. Lucky to be just as special and magical as the most revered man in town--her father. The whole town has been waiting for Rose to turn twelve, when she can join them in their annual capturing of magic on New Year's Day and become the person she was born to be. But when that special day finally comes, Rose barely captures one tiny jar of magic. Now Rose's dad won't talk to her...

Duck and Goose learn to work together to take care of a ball, which they think is an egg.

In this final book in the series, the seventh graders of McQuarrie Middle School and their Star Wars-inspired Origami finger puppets go on a field trip to Washington, D.C., on what proves to be a very long trip full of shifting alliances, betrayals, carsickness, and sugar rushes.

Eleven-year-old Primrose, who lives in a small fishing village in British Columbia, recounts her experiences and all that she learns about human nature and the unpredictability of life in the months after her parents are lost at sea.

A Seattle fifteen-year-old explains some of the reasons for her recent panic attacks, including breaking up with her boyfriend, losing all her girlfriends, tensions between her performance-artist mother and her father, and more.

When she is abandoned by her alcoholic mother, high school senior Ruby winds up living with Cora, the sister she has not seen for ten years, and learns about Cora's new life, what makes a family, how to allow people to help her when she needs it, and that she too has something to offer others.

Fifth-grader Winnie, with notes from her friends, writes of turning her treehouse into an embassy after her newly-divorced parents become unreasonable, where she is joined by nine others with complaints.

Living in the family car in their small North Carolina town after their father leaves them virtually penniless, Georgina, desperate to improve their situation and unwilling to accept her overworked mother's calls for patience, persuades her younger brother to help her in an elaborate scheme to get money by stealing a dog and then claiming the reward that the owners are bound to offer.

When a plant blooms out of fifteen-year-old Laurel's back, it leads her to discover the fact that she is a faerie and that she has a crucial role to play in keeping the world safe from the encroaching enemy trolls.