Top bodyguard Su Can unexpectedly time-travels, becoming a 200-pound dark and fat cannon fodder in a period novel, forced to marry the bedridden paralyzed soldier Lu Zhandong instead of her stepsister. She tears apart her harsh stepmother and toxic in-laws, forcefully splits the household to reclaim property, sends Lu Zhandong for leg treatment, meticulously cares for three orphans, single-handedly builds a new house, slaps her stepsister who attempts to snatch her marriage, and turns the utterly rotten days into a warm, bustling human life in the barren era.