When double cousins Max Rawson and Carly Johnson arrive at their grandparents’ ranch with their siblings Dorie, Chad, and Molly for an annual visit, they are delighted with a surprise request that changes everything. Grandpa asks them to uncover what happened to his grandfather’s twin brother Zachary, who left home to seek adventure and fortune in the West over 100 years before and was never heard from again. The only clue is a pocket watch that Grandpa has that matches on that Zachary carried. Added to this real-life mystery is the sudden arrival of a new hired man, Slim, a quiet stranger with an unusual background. Will they be able to uncover what happened to Zach and his watch? Who is Slim? Can he be trusted? What is he hiding? As the cousins seek answers to these questions, they learn valuable lessons about forgiveness and acceptance.