Edward and Nathan, two Navajo stepbrothers, work with a young water monster named Dew to confront their past and save the world from a monstrous, enormous Enemy that is stealing water from all of the Navajo Nation.

In September 1944, eleven-year-old Billie lives with her great aunt, Doff, eagerly waiting for her older brother Leo to return from boot camp, and desperate to find the father that left when she was little; but Leo brings a friend with him, a Navajo named Denny, and the injured dog they have rescued and named Bear--and when the two young men go off to war, Bear becomes the thread that ties them all together, and helps Billie to find a true friend....

While visiting a Navaho Indian reservation in New Mexico, the Aldens try to save a forest under threat of development by proving it is the site of a lost, buried village, but someone is sabotaging their dig.