Newbery Honor–winning Kathryn Lasky, author of the bestselling Guardians of Ga’Hoole and Bears of Ice series, delivers a sweeping middle grade animal adventure with loyal beavers, a cultured swan, and ominous lynxes around every turn—a captivating story about heroism, loyalty, and the courage to speak truth to power.

''Draws readers deeply into a mystical world and leaves them wishing for more.'' —Kirkus (starred review)

“A marvelous adventure…an enchanting introduction to a wonderful, new natural world.” —Booklist (starred review)

“Themes of belonging and friendship are well conveyed… as are the complexities of this industrious world of creatures.” —Publishers Weekly

Deep in the wilds of Scotland, land of ancient warrior kings and myths, there is a deep secret. The secret is a colony of beavers, a species that is craved for their fur pelts, but vilified for what humans consider to be the destruction of their land. No beaver has been spotted in Scotland or England for over five hundred years, until the young beaver, Dunwattle, is sighted!

Dunwattle’s flight is driven by the presence of a ghostly figure, a figure of a mysterious young girl who is almost one thousand years old. And now Dunwattle is destined to be destroyed for revealing the hidden colony, but his best friend Locksley is determined to save him. Will their ancient beaver colony survive?