Cole Youngblood is a Navajo tribal member by blood, a park ranger in Sedona, Arizona, by necessity. He is also a renowned tracker and geographical expert in the Four Corners area, making him highly sought after in missing person cases. While on a camping trip with his sister and her friends, Cole rescues a trapped wolf pup, whom he names Shadow, in a deep shaft-leading to his accidental discovery of an underground government facility with a huge secret... The S.H.A.D.O.W. agency has created a way for humans to travel back in time with great precision, stopping heinous crimes before they happen, changing the destiny of certain people who died before their time-and preventing young children from being abducted and disappearing forever. If Cole joins this quest, he will be able to change the past in order to improve the present...and perhaps even rid the world gradually of the ever-present evil that has become all too familiar.