Huang Yuqing, heir to a modern family of traditional Chinese medicine practitioners, transmigrates into an old-fashioned household-intrigue novel as a cannon-fodder supporting female character, destined to die tragically after being branded a jinx from the start. The bridal sedan chair has barely arrived when she hears the dreadful news that the general has been killed in battle. She exposes the rumor in front of everyone and stands up to her awful relatives! Facing her cold husband, Xiao Jinyan, she proposes a "marriage of convenience," with neither interfering in the other's affairs. Her ancestral jade pendant's awakened space, complete with a spiritual spring, medicinal fields, and storage, becomes her trump card for turning her fate around: she saves the old general, who is paralyzed after a stroke; cures the young heir's inability to speak; and eases the general's old injuries. She takes charge of the household, battles noblewomen, and answers the original novel's heroine Su Qingrou's taunts about being childhood friends with some face-slapping of her own. With her superb medicinal cooking and medical skills, she amazes the capital.
An imperial edict orders the entire family to relocate to the bitterly cold northern frontier. Along the way, she stockpiles supplies, evades assassins, fights enemy troops, and treats an epidemic, while her space proves invaluable. At a life-or-death moment, she reveals her secret to Xiao Jinyan. Their true feelings break through, they consummate their marriage, and she gives birth to twins, a boy and a girl. When they reach the northern frontier, she is met with desolation, hostility, and Su Qingrou, who refuses to leave her in peace. The heroine teaches people to herd sheep? She opens a large-scale ranch! The heroine wins people over with small favors? She steams meat buns and feeds everyone their fill! The heroine spreads rumors? She exposes her on the spot! Her distillery produces strong liquor to ward off the cold, and her improved crops solve the food crisis. She builds schools and trains talent. With her wits and the resources from her space, she transforms the northern frontier from a wilderness into a thriving border region, earning the title "Holy Mother of the Northern Frontier".