Su Niantang, the only daughter of a family of diplomats, was forced to marry Huo Beichen, a young marshal from the Northern Territory who was about to go on an expedition in three days, as a "penitence" after her father was slandered by political enemies and imprisoned as a collaborator. She married into the Governor's Mansion with a business agreement stating that she would divorce peacefully in three years' time and share 30% of her property. But on the day of the wedding, the male protagonist was ambushed on an expedition and was rumored to have been killed in action. In the desperate situation surrounded by wolves, Su Niantang not only did not sit still and wait for death, but took advantage of the loopholes in the commercial contract to take over the military and political power of the northern border and all trade routes as the "heir". She reorganized the army's finances with thunderous means, used diplomacy to deal with the great powers and the southern warlords, and turned a northern border that was on the verge of collapse into a piece of iron. In fact, Huo Beichen did not die - he was seriously injured in that battle and was rescued by a mysterious organization, but lost his memory. When he returned to his former mansion as an ordinary guard, he found that the "wife" he had never met had become the "real master" in the hearts of all his men.