In a future where the Population Police enforce the law limiting a family to only two children, Luke has lived all his twelve years in isolation and fear on his family's farm, until another "third" convinces him that the government is wrong.

In India, a healer invites twelve-year-old Anand to join him on a quest to return a magical conch to its safe and rightful home, high in the Himalayan mountains.

When fifteen-year-old Ty, who has always lived on the ocean floor, joins Topside girl Gemma in the frontier's underworld to seek and stop outlaws who threaten his home, they learn that the government may pose an even greater threat.

When twelve-year-old Peter and his family arrive in Greenland for his father's research, he stumbles upon a secret his mother has been hiding from him all his life, and begins an adventure he never imagines possible.

When thirteen-year-olds Jonah and Chip, who are both adopted, learn they were discovered on a plane that appeared out of nowhere, full of babies with no adults on board, they realize that they have uncovered a mystery involving time travel and two opposing forces, each trying to repair the fabric of time

Purports to be the journal of an eight-year-old boy explorer who has, miraculously, lived for over four hundred years, travelling the earth, fighting giant crocodiles, learning to speak with gorillas, and trying to find a way to return home.

When eleven-year-old Gregor and his two-year-old sister are pulled into a strange underground world, they trigger an epic battle involving men, bats, rats, cockroaches, and spiders while on a quest foretold by ancient prophecy.

Kate and her grandfather use one of his inventions to travel faster than the speed of light on a mission to save the sun from a premature death.

After passing a series of mind-bending tests, four children are selected for a secret mission that requires them to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

Drawn to a wasteland of garbage dumps called Coldharbour, six children undergo mysterious transformations and band together to face an unknown enemy.

Meg Murry and her friends become involved with unearthly strangers and a search for Meg's father, who has disappeared while engaged in secret work for the government.