In the year 2895, Ryder, a medical rescue robot crafted for the Terran Defense Force, is dispatched to a Martian colony after a catastrophic laboratory accident. Built with cutting-edge medical tools and the combined knowledge of multiple brilliant minds, Ryder’s purpose is clear: to save lives in the harshest conditions. But when an experimental machine at the heart of the disaster malfunctions, Ryder is caught in a violent explosion and awakens in an unfamiliar world. This new land is a stark contrast to the advanced colonies Ryder once knew, reminiscent of Earth’s Tang and Ming Dynasties, blending ancient architecture and culture with no sign of modern technology. The locals, frightened by Ryder’s metallic frame, brand him a "Cursed Doll." Despite their fear, Ryder’s core directive remains unchanged: "I protect those who cannot protect themselves."