Zhao Shiyu, the third daughter of the Zhao family, was forced to marry Prince Yu Yuwenyi due to an imperial edict. She met the seventh prince Yuwensu, and unexpectedly discovered that Yuwensu had a past with his brother Yuchi Nancheng. Zhao Shiyu helped Yu Wenyi fight for the throne, and the two secretly fell in love. Yu Wensu and Yuchi met in Nancheng. What happened to them in the past? Concubine Xiao secretly harmed the two of them. The cause of the death of Concubine Yu Wenyi gradually emerged. The identity of Zhao Shiyu also came to light. They all originated from the artifact. The four of them worked together to snatch the artifact and seal it to stabilize the world...