In the winter of the nineteenth year of Jinghe, the Yan Dynasty overthrew. On the night of the palace coup, fifteen-year-old Princess Xiao Jinse of Chang'an hid in the closet and witnessed a river of blood. Lu Lin, the son of the rebel leader, opened the cupboard door and handed over a palace maid's dress: "Go through Xihua Gate and turn right at the third intersection."
Ten years later, deep in the palace of Xin Dynasty, Zhou Wu, a female official of the Shangfu Bureau, was cautious and established herself with embroidery skills. At the Queen Mother's birthday banquet, a war broke out in the north, and Prince Lu Lin requested an order to go to war. In front of the emperor, Emperor Yongchang ordered him to become a concubine immediately.
While all the noble ladies in the room were waiting with bated breath, Lu Lin raised his hand and pointed at the inconspicuous blue figure in the corner——
"My son chooses her."
Overnight, the princess of the subjugated country became the fiancée of the enemy prince.
The deep palace is like the sea, and she needs to keep her identity secret under the prying eyes of all forces; the embers of the old dynasty are still not cold, and the former court officials are secretly contacting her, asking her to return to the country and avenge her; and the man who drags her into the whirlpool seems to have deep meaning in his eyes: "Zhou Wu, this deep palace is like a chess game. Once you enter the game, you can only advance and retreat with me."
But she gradually discovered that there was an even more shocking truth hidden behind the palace change that changed everyone's destiny ten years ago. The royal family map of the previous dynasty in the secret room of Lu Lin's study, the blood letter entrusted to him by the third prince before his death, and the clues of the military symbols of the previous dynasty that vaguely emerged during the crisis in the north... All point to a misty past.
And when she finally stood in front of him, she asked the question that had been buried for ten years: "Why did you choose me?"
His answer will reveal the love, hate, sacrifice and unbreakable bond between two dynasties and two generations.