Under the strings of the brothel violinist Ye Zhao, there is a secret code for the restoration of the overthrown dynasty. Ten years ago, Southern Chu was crushed by Daqi. She hid in Fengyue Field at a young age and used the ancestral "Crane Book" as a spy network - Gong Shangjiao Zhengyu responded to the secret order, and Chu Xian was soaked in blood to fulfill the last wish of the previous dynasty.
But Xiao Chengyu, the prodigal king of Qi, is the most powerful edge in the game. He used his spare time to investigate the "remnants of Nanchu", but in fact his mother-in-law was the princess of Nanchu, and half of the jade was buried with the blood of revenge. When the sound of the piano was used as bait, he was sure that she would bite the hook for the restoration of the country; where the secret message was hidden, she could see through his ruthlessness in killing people with a borrowed knife.
The prince's trapped knife was on his neck, and the bloodline of the previous dynasty was found in the coffin of the mother-in-law. They were shocked to realize that they were both orphans of Southern Chu: one wanted to be buried with Daqi to destroy the country, and the other wanted to keep the people safe. The secret letter of music theory leads to the secret treasure of the dragon vein, the old hatred of the previous dynasty collides with the power struggle of the new dynasty, when the bloody conspiracy burns the heart, the game between the piano master and the prince finally becomes the tragic song "Crane" that overthrows the dynasty - is it to rekindle the war, or to restore the cultural heritage to protect the common people?
