A female FBI agent died in a car crash while chasing a gangster, but she did not want to travel to a different continent and became the third lady of the weapons manufacturing village of the Yan Kingdom. Su Qian'er, who was originally cowardly and incompetent, suddenly changed her temperament and became the young owner of the Yuquan Villa in the East Continent, a person who is wanted by the royal families of all countries. In war-torn times, weapons are most in demand, and Su Qian'er has become the woman that men most want to marry. The Crown Prince of Qi, Zhong Liye, and the Crown Prince of Liang, Chu Xingyun, were obsessed with Su Qian'er all their lives, but she didn't care about the position of the Crown Princess and had to rely on her own strength to end this troubled world.