Little Fur is an elf troll who lives in a secret wilderness at the heart of a great human city. She is a healer. She sings to the ancient trees that protect the small wilderness.
Discovering that her friend Ginger is in terrible danger, Little Fur frees the old wolf Greysong from the zoo and together they travel to the frozen mountains. There she must face the deadly peril that lies at the heart of the Mystery of Wolves, and learn about her own mysterious past.