The year is 1862, and 12-year-old P.K. “Pinky” Pinkerton is on the run from Whittlin’ Walt and his gang of ruthless desperados. P.K. is determined to hold on to Ma’s last priceless possession: the deed to a large amount of land and silver mines in the Nevada Mountains. P.K. will have to be both clever and cunning to evade the band of outlaws. All this is seen through the eyes of P.K., a half-Lakota kid with Asperger Syndrome, which makes him chronically unable to interpret the intentions of people around him.