Third-grader Emma's peaceful life as an only child is disrupted when she has to temporarily share her tidy bedroom with four-year-old Anthony Scarpetto, a bona fide "pain in the patootie."

When her teacher announces that the class will be putting on a play, Grace hopes she will win the part of the forest fairy queen.

As she describes all the things that are "uncool" about her father's latest girlfriend, a young girl begins to admit that there are some things she likes about her.

Fourth-grader Cal learns a lot about teasing and standing up for others when a weird new student joins his class, while Stella, the tenth-grader who lives with Cal's family to help his mother, practices for her driving test.

When fearful seven-year-old Alvin Ho learns that his mother is expecting a baby, he develops a sympathetic pregnancy--adding to his worry about the burglar who is targeting Concord, Massachusetts.

Eight-year-old Grace is excited to learn that her best friend, Mimi, is going to become an older sister, but when both try to be "mother's helpers" for a family renting a house on their street, little Lily likes Grace best, causing Mimi to doubt herself and Grace to form a plan to fix things.

When Teddy's chihuahua Phantom goes missing, he and Addie May join forces to try to figure out what happened to the dog.

Pen pals Molly and Olive are both having relationship problems in their third grade classes--Molly is struggling with Jenna, a new girl, who seems to think that name calling is a way to fit in, and Olive has joined a gymnastics team which is putting a strain on her friendship with Emma, whom she has know for years.

When Louis, the world's self-proclaimed space expert, is invited to Personal Space Camp by the school principal, he soon learns that personal space really isn't about lunar landings, Saturn's rings and space ice cream."

Vidia finds her status as the fastest fairy in Pixie Hollow jeopardized by the arrival of a fast-flying newcomer named Wisp.