Unable to recall their past love for each other, Prince Li Chengyin and Princess Xiaofeng reunite in a political marriage and battle court intrigue.
Xiao Feng (Peng Xiao Ran) is the beloved princess of Western Liang when she is arranged to marry the crown prince Li Cheng Yin (Chen Xing Xu). Loved by her people immensely, she sets off on a journey leaving the place she loves to become the crown princess. Although the Crown Prince is one of the most powerful people, only second to one, the Eastern Palace.
A love story revolves around the 9th Princess of Western Liang as she journeys to the Central Plains to fulfill a marriage alliance with the Crown Prince. Having received overwhelming love and admiration as the 9th Princess, Xiao Feng is forced to leave the life that she has known in order to become the Crown Princess. Her husband, the black-bellied Crown Prince, holds the highest position second only to one, the Emperor. However, the Eastern Palace is the most dangerous place to be. For political reasons, the Prince has no choice but to marry the Princess from a foreign land. He has his own favored concubine while she has her own life. Two parallel lines begin to intersect in a place fraught with danger and deadly power play and buried somewhere deep inside are memories that have yet to resurface.
Qu Xiaofeng (Peng Xiaoran), the beloved princess of the Western Liang Kingdom, is promised to the Crown Prince of Li Dynasty in a political marriage between the two countries. Under the deliberate arrangement by Gu Jian (Shawn Wei), fifth prince Li Chengyin (Chen Xingxu) disguises himself as an ordinary tea merchant by the name Gu Xiaowu, and meets Qu Xiaofeng. They fell in love with each other as Li Chengyin tried to gain her trust to infiltrate Dan Chi, the kingdom ruled by Xiaofeng's grandfather, in order to gain war merits to become the new Crown Prince. After discovering the truth behind Li Chengyin's intentions, she jumps down the River of Forgetfulness to forget the painful memories. Li Chengyin, shocked at Xiaofeng's decision, follows suit. Several months later, Xiaofeng is now married to Li Chengyin, who is now the crown prince of Li Kingdom. Although the Crown Prince is the second most powerful person in the kingdom, the Eastern Palace, where he lives, is one of the most dangerous places. Due to all the schemes and betrayals in the Eastern Palace, Xiaofeng and Chengyin's lives begin to intersect and somewhere buried within are hidden memories yet to resurface. Will Xiaofeng find true love during her journey and will she be able to face the cruel world of politics?
