Xie Linjin is an orphan from the previous dynasty who was locked away in the Leng Palace. He was imprisoned in the shadow of the imperial power since he was a child, and he lives with the fragments of the lonely lamp all day long. Until that night, Yu Zhaojue broke into the forbidden palace wearing cold armor and carrying a blood feud. He actually knelt down and kowtowed, calling her "Her Royal Highness the eldest princess" - but Dayin no longer had such a princess. She sneered at him coldly, but his eyes were filled with tears. He kept saying that his memory contained the tenderness of her dressing him in the plum garden when she was a child. A misunderstanding revealed the dusty secrets of the intertwining of two lives, the entanglement of love and hate, and the strife in the court. Did he really remember the wrong person? Or has she already forgotten him in reincarnation?