During the first year of Dasheng Jing, Qingshi Pass in the northern border was bitter with yellow sand and difficult for people to make a living. Practical female doctor Su Mu took root at the frontier, relying not on innate cheat codes, but solely on her solid medical skills to treat warhorses and livestock, reclaim medicinal fields, and secure the livelihood of neighboring villagers. With a clear, capable, calm yet gentle temperament, she resolved disputes and healed injuries in the dry and harsh daily routine of frontier defense. She happened to meet the silent and resolute frontier war god Pei Zheng; the two went from helping each other as neighbors and guarding the pass side by side, to gradually knowing and staying with each other. Free from cliché tropes and industrial sweet pampering, it interprets the most authentic and warm frontier fireworks and slow-burn mutual devotion.