The soul of modern elite Shen Qianyu traveled through the fictional dynasty "Dayin" and became a humiliated hostage who returned home, activating the "strongest emperor system" in a desperate situation. At the same time, Song Wan, the legitimate daughter of an aristocratic family, has been widowed for six years because of her fiancé who "died in battle". However, she waits for him to return with the time-travelling daughter Lin Wan'er, and wants to abandon her on the grounds of "God's will". When they met at a palace banquet, Shen Qianyu relied on his system resources and insights beyond his time to secretly help Song Wan reveal the truth about the prince's escape and forgery of military exploits, and refute the absurdity of Lin Waner's "secret".
The two have since joined forces. Shen Qianyu used the advanced knowledge and state governance strategies provided by the system to carry out reforms, while Song Wan used his aristocratic influence and wisdom to rally people for him and build a female intelligence and business network. Their cooperation has evolved from mutual benefit to like-mindedness. Lin Wan'er, a time-traveling girl, defected to her political opponents and continued to cause trouble with her vague "historical predictions", but the two worked together to resolve the crisis time after time. Shen Qianyu used the tactical equipment exchanged by the system to win more with less on the battlefield, establishing military prestige, and finally ascended the throne as emperor with Song Wan's full support. He defied all opinions and appointed the former "widow" Song Wan as his queen, and together they created an eternal prosperous age.
