The whip-smart but insecure Cassidy receives a treasured coin when she stands up to the schoolyard bully. Soon thereafter, a bicycle accident sends her through a mystical portal into the lost land of the Pueblo Ancestors. There she meets Koko – a.k.a., the flute-playing trickster Kokopelli – and the two team up on an epic quest to confront a giant and restore order to the universe. As they take on challenges based in Native American mythology – complete with monsters such as Rolling Head, the sinister Thunderbird, and an army of frog people – Cassidy learns how to trust her inner voice and accept her own power.