Eleven-year-old Allen has a recurring nightmare, a persistent habit of humming, and difficulty connecting with other people. Making a fresh start, he and his grandmother move to a small village in northern New York. But when he meets an old llama at a winter festival, the encounter reveals a language he didn't know he could speak and unveils repressed memories that contradict what he has long believed about his earliest years and his parents' deaths.

When the llama's life is threatened, Allen vows to free it. Together they begin a desperate trek through a snowy wilderness, a journey on which Allen must wrestle with lies about his past while struggling against the elements to survive.