Twelve-year-old Percy Jackson learns he is a demigod, the son of a mortal woman and Poseidon, god of the sea. His mother sends him to a summer camp for demigods where he and his new friends set out on a quest to prevent a war between the gods.

Having recently discovered she is the sole heir to the throne of a tiny European principality, fourteen-year-old Manhattan resident Mia writes in her journal about her attempts to cope with this news, as well as with more typical teenage concerns.

"Sophie must uncover the truth about the Lost Cities' insidious past, before it repeats itself and changes reality"-- Provided by publisher.

Thirteen-year-old Twig, having always looked and felt different from his woodtroll family, learns that he is adopted and travels out of his Deepwoods home to find the place where he belongs. Young Twig lives in the Deepwoods, among the Woodtrolls, but he isn't one of them. In a brave attempt to find out where he belongs, Twig wanders into the mysterious, dangerous world beyond the deepwoods. He meets a collection of odd companions, such as his wise...

Child prodigy Cadel Piggot, an antisocial computer hacker, discovers his true identity when he enrolls as a first-year student at an advanced crime academy.

Twelve-year-old identical twins Jay and Ray have long resented that everyone treats them as one person, and so they hatch a plot to take advantage of a clerical error at their new school and pretend they are just one.

"Sixteen-year-old Evie is forced to face the truth about her supernatural past when a deadly faerie battle threatens the future of the entire paranormal world"-- Provided by publisher.

Kate, Michael, and Emma have passed from one orphanage to another in the ten years since their parents disappeared to protect them, but now they learn that they have special powers, a prophesied quest to find a magical book, and a fearsome enemy.

Rigg is a teenager who possesses a secret talent that allows him to see the paths of people's pasts. Rigg's only confidant is his father, whose sudden death leaves Rigg completely alone, aside from a sister he's never met. But a chance encounter with Umbo, another teen with a special talent, reveals a startling new aspect to Rigg's abilities, compelling him to reevaluate everything he's ever known.

When Firestar's grandchildren, Hollyleaf, Lionblaze, and Jayfeather, finally discover who their true parents are, there are dire consequences for ThunderClan and the Warrior Code.