After fourteen-year-old Ozzy's scientist parents are kidnapped, Ozzy's only help may be a classified ad that says "Wizards for hire.".

Young wizard prince Xar, who has no magic, and warrior princess Wish, an outcast, team up on an adventure that brings them to witches long believed to be extinct.

Wizard-in-training Alex Taylor must help his mentor Whalen track down Whalen's nephew Jabez who was once being trained by Whalen but who now has chosen a path into dark magic.

Pulled through a glass that brings him back in time, Septimus Heap becomes the apprentice of an alchemist.

When human magic is destroyed, familiars Aldwyn the cat, Skylar the blue jay, and Gilbert the tree frog set out without their wizards to seek the Crown of the Snow Leopard, the only object that can save the kingdom of Vastia from the evil hare Paksahara.

"When Annabel's mother abruptly leaves her with her two mysterious aunts, she is thrust into a magical side of Victorian London she never knew existed and discovers that she is the key to saving it from an evil wizard bent on destroying all good magic"--

Princess Anya has a big problem: Duke Rikard, her step-stepfather is an evil wizard who wants to rule the kingdom and has a habit of changing people into frogs, and her older sister Morven, the heir, is a wimp--so with the help of the librarian Gotfried (who turns into an owl when he is upset), and the Royal Dogs, she must find away to defeat Rikard, save her sister, and maybe even turn Prince Denholm back into a human being.

Septimus must battle the remnants of the Dark Domaine, which will remain until the power of the evil Two-Faced Ring is destroyed forever. To accomplish that, the ancient Alchemie Fyre must be relit -- a task that sends Septimus to the very origins of Magyk and Physik, testing both his skills, and his loyalties to ExtraOrdinary Wizard, Marcia Overstrand, and Alchemist Marcellus Pye.

Septimus must elude the plans of Merrin Meredith and Tertius Fume in order to find the House of Foryx, a place where all Time meets, and secure the release of Nicko and Snorri.

When Princess Jenna is pursued by a dark wizard, it is the apprentice, Septimus Heap, who must save her while enduring such terrors as a night in the Forest with hungry wolverines and carnivorous trees.