A top-selling saleswoman transmigrates into a book, binds herself to a System that sells goods across myriad worlds, and becomes the daughter of a painter. When her father is convicted of a crime and saddled with debt, the heroine visits a brilliant but undervalued architect. The male lead, an heir to a princely estate, proposes that they work together. He initially despises her for being so money-minded, but is won over by her professionalism and agrees.
Using modern marketing techniques, the heroine rebrands the male lead's traditional buildings. Her custom-building and installment-payment plans become a hit. The antagonist has someone swap in inferior timber, causing a residence to tilt. The heroine takes responsibility and offers refunds. The male lead spots the flaw, and the two investigate together, gradually falling for each other.
After dealing with the insider, the heroine personally establishes a three-stage inspection standard, and the workshop flourishes. Jealous, the antagonist maliciously alters their advertising slogan again and reports them. The heroine is arrested. The male lead brings her drafts to her rescue, and their feelings deepen.
After her release, the heroine exchanges her points for waterproof putty and builds a biomimetic flood-resistant house with the male lead. The court rewards them, and the two seize the opportunity to find evidence of the antagonist's crimes and expose his misdeeds. The antagonist is brought to justice, the heroine becomes the richest person in the land, and the male lead builds their love nest with his own hands. They end up together.
Theme: Turn your fortunes around with your own skills, and build a family business through ingenuity.
