The Last Stand sets in a near-future deep-cold winter apocalypse. Wealthy heiress Lily Carter awakens on the live finale stage of a reality show, retaining memories of a previous life where her stepsister Sue Bishop betrayed her, hired strangers to seize her cabin, and left her to freeze. Armed with foreknowledge of the coming catastrophe, Lily claims her grand prize — a luxury Newmar King Aire RV — and secretly transforms it into an armored mobile fortress. As the freeze descends, she navigates sisterhood rivalry, a fanatical doomsday preacher, roving survivors, and buried family secrets.