When Alice TodHunter Moon was five years old, she saw a beautiful golden Dragon Boat fly over her PathFinder village. She knew at once that the boat was Magykal. That was years ago, before her mother died, her father disappeared at sea, and the Garmin took her best friend, Ferdie. Now it's up to Tod and Ferdie's brother Oskar to rescue Ferdie from the Garmins' keeper, the malevolent Lady.

Almost one year ago, Alice TodHunter Moon left her PathFinder village to become Apprentice to ExtraOrdinary Wizard Septimus Heap. Now, in faraway lands, the Castle is in peril. The brilliant blue stone is crumbling to dust, and both the witch Marisa and the wicked Red Queen have their eyes on the throne. But as Tod sets off on a hazardous journey to find a new Keystone, her life may be in the greatest danger of all. Can she save the Castle while evading the fate that befell her mother?

Now that Septimus, Jenna, and Beetle are 14 years old, they have assumed larger roles in their Magykal world. Beetle is the Chief Hermetic Scribe of the Manuscriptorium and Jenna will soon be Queen, but Septimus is still battling the remnants of the Darke 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.

In the sixth book of the Magykal series, Alther Mella has been banished, a Darke Domaine engulfs the Castle, and a Darke dragon is on the loose. Septimus Heap must use all of his skills to save the Castle and the Wizard Tower from destruction: He must enter the Darke. But he cannot do this alone....

In this fifth book in the Magykal series, Septimus ends up on a captivatingly beautiful island, one of seven set in a sparkling sea. He's stranded there with his badly injured dragon, Spit Fyre, along with Jenna and Beetle. There are some strange things about the island, including a Magykal girl named Syrah, a cat-shaped lighthouse that has lost its Light, and an eerie presence that sings to Septimus - can he escape the persistent call?