The Tucson Kid is called to the American northwest by the Great Northern Fur Company. The company hires Tucson to go after Rex Normanson, an erstwhile partner of the company who has gone rogue and is inciting Indian tribes to revolt against the American Government. A coalition of the fur company, the U.S. Army, and the Canadian government want Normanson stopped at all costs. The Tucson Kid will be guided up the Stick River to Normanson's stronghold on Eagle Mountain by the half-Indian, Sophie Halloway. Tucson will also have Joe Personelli and his crew to help fight off the forces they know Rex will throw against him to prevent him from reaching the mountain. The action-packed story follows the expedition as it fights its way up the Stick River, chronicles the developing relationship between Tucson and Sophie Halloway, and describes Tucson's growing conflict with Joe Personelli. But once Tucson reaches the top of Eagle Mountain, he is in for the surprise of his life when he meets Rex Normanson.