In 1862 Nevada Territory, after finding his foster parents murdered and scalped, twelve-year-old Pinky Pinkerton, son of a railroad detective and a Sioux Indian, inherits a valuable deed and must hide from dangerous Whittlin Walt and his gang of desperados.

In 1860s Nevada, master-of-disguise P.K. Pinkerton uncovers a sinister plot when he takes a case that calls for him to shadow his friend and mentor, Poker Face Jace.