Alice Mayfair, twelve years old, slips through the world unseen and unnoticed. Ignored by her family and shipped off to her eighth boarding school, Alice would like a friend. And when she rescues Millie Maximus from drowning in a lake one day, she finds one.

But Millie is a Bigfoot, part of a clan who dwells deep in the woods. Most Bigfoots believe that people—NoFurs, as they call them—are dangerous, yet Millie is fascinated with the No-Fur world. She is convinced that humans will appreciate all the things about her that her Bigfoot tribe does not: her fearless nature, her lovely singing voice, and her desire to be a star.

Alice swears to protect Millie’s secret. But a league of Bigfoot hunters is on their trail, led by a lonely kid named Jeremy. And in order to survive, Alice and Millie have to put their trust in each other—and have faith in themselves—above all else.