Color of a Brisk and Leaping Day portrays the saga of the Yosemite Valley Railroad, and one man's quest to try to save it. John Lee (Peter Alexander) is the grandson of a Chinese railroad laborer, who is proud that his grandfather helped build the infrastructure of America. Lee's grandfather also instilled in him a great love of trains. Instead of working for his father's profitable business, Lee finds work as a railroad man and is living out his dream. One day he learns that the Yosemite Valley Railroad is shutting down, so he sets out to find a way to save it. Lee finds a wealthy eccentric to help save the railroad, but financial inevitabilities are still very prominent. Can John Lee help save the memory of his grandfather and the many forgotten laborers like him, or will the ever-present financial reality of the railroad overwhelm this wide-eyed idealist?