Isola, a survivor from the apocalypse, transmigrates into the body of an exiled criminal woman in the Northern Wastes. She is forced into a mandatory marriage with a border soldier. She chooses Kaelen, a hardened ranger centurion. Blessed with an agrarian deity’s power, she identifies medicinal herbs, reclaims wasteland and builds handicraft trades, lifting her destitute household to prosperity. Meanwhile, barbarian raiders lurk at the border and war looms near. She ploughs spring into the frozen earth with her own hands, while he fights to defend this frontier wall.