Meng Beichen fought for ten years and gained peace in Beiyuan for twenty years. However, under the calm of Beiyuan, there were foreign forces and internal chaos.
The Tang and Song Dynasties strived to clean up the court, so they sent their childhood sweetheart Yu Ciming to the Yun Mansion for protection. However, the Tang and Song Dynasties did not expect that Yu Ciming would be interested in the "Princess Nanyang" who was both good and evil, difficult to distinguish between friends and foes, and had a cold nature. There was also Prince Jin, Tang Che, who devoted his life to shaking the heart of Princess Nanyang.
When Ji Yuanche asked what ideal is, Yu Ciming reflected on life, and joined hands with Ji Yuanche to promise the ideal of benefiting the world and being one person for life. Gradually it ran counter to the path taken by the Tang and Song Dynasties.
Under the complicated Beiyuan, Yu Ciming and Wen Nanyu protected each other all the way and founded Tianyuan Inn. They wanted to escape everything, but they were still pushed to the top by all forces. Under countless choices and gains and losses... Yu Ciming finally transformed and grew up...
Wen Nanyu also changed from being indifferent and became a warm "Princess Nanyang"