Xiao Xuerou goes far to Mobei as a peace-making princess of Dasheng. With her superb medical skills, she saves Helian Ye from a desperate situation and removes the chronic poison for the old Qihan. Facing the difficulties of the queen selection trial, she is resilient, studies and practices hard, and develops mutual affection with Helian Ye from probing and suspicion. Together, they defeat the power-grabbing conspiracy of the harem and the uncle of the king, ultimately winning the recognition of the tribe, securing the queen's position, protecting the stability of those around her, bringing about peace on the borders of the two countries, and achieving a complete fulfillment through running towards each other.