Lin Qingwu, an heir to a family of physicians, is framed by treacherous villains and exiled to the bitterly cold Frigid Ridge. There, she encounters Xiao Jin, a former young marshal who has been wrongfully accused and severely wounded. Using her family's ancestral medical skills, she treats Xiao Jin while reclaiming wasteland, cultivating fields, and improving the frozen soil to survive. Together, they rally displaced people and establish the Ridge Army, repeatedly repelling barbarian invasions and fighting corrupt officials and local thugs. Chancellor Yan's faction in the imperial court continues to suppress them from the shadows and devise deadly schemes. The two gather evidence of treason and head to the capital, where they expose the traitorous ministers' conspiracy in court, clear both families of their wrongful accusations, reclaim their identities, and finally achieve a peaceful and fulfilling life.