Zhang Qian, the heroic envoy who opened the door to the Silk Road, accidentally obtained the mysterious ore "Wan Magpie" and the "Wondrous Man's Design" in the process of excavating the Western regions, and brought them back to the Central Plains as heirloom treasures. His grandson, Zhang Mang, built the wooden man "Asi" according to the design plans, but his family was tragically exterminated; fortunately, a pair of young children, Zhang Mo, Zhang Tong, and the wooden man "Asi", were sent out safely in the nick of time. As they grow up, Zhang Mo and Zhang Tong, with Xi in tow, hope to solve the mystery of the mysterious ore and the murder of their family, and embark on an adventure to the Western Region!