It's 1883, and a brave adventurer named Truman sets out to find a treasure beyond his wildest imaginations. Guided by a map, Truman, along with Pa, Ma, and his horse Jasper, quickly find themselves in the High Country of the Sierra Nevadas. In this thrilling tale, Truman enters to a strange place with giant trees, and deep canyons carved out by glaciers, and learns a lifelong lesson that he'll never forget. Truman's adventure takes us through what we know today as , and gives us a front row seat to all the views know and love today. Truman's stops along the way include the towering , the eye-popping , the giant trees of , the gorgeous itself, captivating , and much much more. Hang on tight for High adventure in the High Country, with a boy whose truly living a wild man's dream.