Three teens race against a waxing moon to prevent an ancient evil from tipping the universe into chaos.

When seventeen-year-old Amy Adams finds her father's family and a lost twin brother on the Hopi reservation in Arizona, she stumbles into a struggle between shamans and witches that spans a thousand years. After Mahu is attacked and a Conquistador's journal stolen, Amy and her new friend Diego set out on a dangerous quest to find and perform the ceremony that can stop ancient evil from entering our world.

But Amy and Diego are not alone as they race against time measured by a waxing moon. Kokopelli's song, the haunting notes of a red cedar flute, guides them along the migration route sacred to pueblo peoples: West to Old Oraibi, South to El Morro, East to Cochiti Pueblo, North to Chimney Rock, and finally to the Center-and the final confrontation-in Chaco Canyon.