When Tilly, Oskar, Milo and Alessia venture into King Arthurs realm in search of the wizard Merlin, they discover that the magic of bookwandering is not at all what they thought.

Together, they must journey into myth and legend to bargain with the trickster Loki and unlock their destinies with the help of the Three Fates and find a way to untangle the Alchemists grip on the worlds imagination.

To save Pages & Co. and the very foundations of bookwandering, Tilly and her friends will have to learn the true power of imagination in a thrilling final adventure, but an unexepected enemy stands in their way . . .