Colorado, July 1878. The solar eclipse is almost upon the country and a peak overlooking the fledgling town of Elkhorn is one of the centers of attention. In the midst of frontier celebrations, Caleb Marlowe, reluctantly deputized for the coming event, learns that local power broker Judge Horace Patterson is targeted for assassination. Caleb's efforts to thwart the plan, however, are complicated when a ghost from his past shows up to blackmail him....