Tilly Pages and her friend Oskar journey to Washington, D.C., where she wanders inside the books at the Library of Congress and they try to stop a nefarious plan with some powerful help.

"Milo Bolt is ready to be the hero of his own story. With Uncle Horatio trapped in an enchanted sleep by the power-hungry Alchemist, he sets off with his new friend Alessia to find a cure. As they search for clues, the pair find themselves at the magical treehouse -- home of the Botanist, the Alchemist's sworn enemy. In their hunt for the cure, Milo and Alessia must forage in the Secret Garden, challenge Robin Hood, and confront the mighty Jabberwock....