Lin Nanxi, a modern girl, accidentally transmigrates while ranting about a novel. She becomes a concubine-born daughter forced to take another’s place in marriage and binds a system to save the doomed General Wen Huaijin. Using the system shop, she empties the royal treasury and her enemies’ fortunes. During their exile, she leads the Wen clan to live comfortably and outwits pursuers. In the end, she helps Wen Huaijin rally troops to overthrow the tyrannical emperor and gains her happy ending.