A puppet hides a court secret, triggering a series of killings. The story takes place in the Jiaqing period, where Duan Lang, a prodigal son of the rivers and lakes, was ordered by his second brother to protect the puppet, and the secret agent Qianse became an enemy of Duan Lang because he was ordered to seize the puppet. Qianse, who was inferior to Duan Lang in martial arts and wit, failed to carry out the mission, resulting in the destruction of his family and his death. However, although Qianse's hatred for Duan Lang is deep, she unknowingly falls in love with Duan Lang and can't extricate herself.　　At this time, the weak and gentle Le Zhilan appeared, and she and Duan Lang were in love with each other. Duan Lang is torn between the two daughters, how will he choose? On the other hand, the conspiracy behind the puppets is gradually revealed, and dangers lurk. And the Crazy Knife Zuoma was jealous of Duan Lang because of his love for Zhilan, and vowed to kill Duan Lang to take Zhilan, and the jealousy of the Crazy Knife Zuoma put Duan Lang on the verge of life and death......