When a struggling student teacher assigns a group project, seven-year-old Just Grace gets so involved in working with Grace W. and Grace F. that she fails to understand why she and her best friend, Mimi, are drifting apart.

When her mother uproots them again to another home and takes a job as housekeeper, ten-year-old Mavis is determined to find a best friend in Landry, Alabama, where the summer also holds the promise of friendship and change for a sad man, a stray dog, and a timid girl.

Isolated from friends who believe the worst because she has not been truthful with them, sixteen-year-old Annabel finds an ally in classmate Owen, whose honesty and passion for music help her to face and share what really happened at the end-of-the-year party that changed her life.

Although other animals are better at lifting, jumping, and running, Croc and Turtle discover something they are best at.

After an accident, seventh graders Joya Mia and Kiki help their best friend Greer cope by signing up for a triathlon.

"Riley Flynn is alone. It feels like she's been on her own since sixth grade, when her best friend, Emily, ditched her for the cool girls. Girls who don't like Riley. Girls who decide one day to lock her in the science closet after hours, after everyone else has gone home. When Riley is finally able to escape, however, she finds that her horror story is only just beginning. All the school doors are locked, the windows won't budge, the phones are dead,...

Sam, who has cerebral palsy, goes back-to-school shopping with her best friends.

When Marty finds a cryptic message that claims he is being observed by aliens, Marty attempts to head off this threat to Earth, find his missing cat, and get his homework turned in on time, with help of his best friends.

Reluctant hero Hiccup Horrendous Haddock III must rescue his best friend, Fishlegs, from the deadly disease Vorpentitis. The only cure is rare and almost impossible to find ... a potato. But where will Hiccup find such a thing?

Eighth-grader Niki's best friend, Ava, dumps her just as life at home is becoming more complicated by her brother Danny's behavior and her mother's refusal to admit Danny is on the autism spectrum.