In futuristic Satellite City, fourteen-year-old Cosmo Hill escapes from his abusive orphanage and teams up with three other people who share his unusual ability to see supernatural creatures, and together they determine the nature and purpose of the swarming blue Parasites that are invisible to most humans.

In a distant frontier world, thirteen-year-old Jacob is uncertain of his future in a community that considers blindness a virtue and "Seers" as aberrations.

In a series of journal entries, eleven-year-old child prodigy Millicent Min records her struggles to learn to play volleyball, tutor her enemy, deal with her grandmother's departure, and make friends over the course of a tumultuous summer.

After his mother's death, twelve-year-old Skiff Beaman decides that it is up to him to earn money to take care of himself and his father, so he undertakes a dangerous trip alone out on the ocean off the coast of Maine to try to catch a hugh bluefin tuna.

Upon leaving an oppressive summer camp, twelve-year-old Margaret Rose Kane spearheads a campaign to preserve three unique towers her great-uncles have been building in their backyard for more than forty years.

A twelve-year-old boy named Moose moves to Alcatraz Island in 1935 when guards' families were housed there, and has to contend with his extraordinary new environment in addition to life with his autistic sister.