Shen Taotao, a modern civil engineer, unexpectedly transmigrates into the body of the legitimate daughter of a disgraced official and is exiled to Ningguta along with her entire family. Facing extreme cold, famine, and deadly dangers at every turn, she uses her construction expertise to build heated kang beds and houses, reclaim farmland, and smelt refined iron, transforming a desperate wasteland into a prosperous new city. Along the way, she and Xie Yunjing, who guards the frontier, go from testing each other to fighting side by side. Amid blizzards and conspiracies, they protect their family and the people, carving out a bright future of their own.