The water town in the south of the Yangtze River is misty and rainy. Mu Chen was originally the son of a scholarly family, but his family was destroyed overnight. His father and brother died unjustly, and the family's reputation was destroyed by invisible evil hands. Everyone knows that Mu Chen has died in a foreign country long ago, but no one knows that he has lived anonymously for three years, walking among poetry, wine, romance and the shadows of the world. Mu Chen did not use swords to take revenge, but used his literary talents to set up traps. He used musical instruments, chess, calligraphy, paintings, and laws to lure the enemy into deep trouble and make the enemy disorganized. However, on the road to revenge, Mu Chen gradually feels that hatred is like poison, corroding his heart, and the truth is also confusing - is what he is pursuing family feud, or the redemption of his own destiny? The story uses a classical style to describe the subtleties of the human heart, where machinations and tenderness are intertwined, and it is difficult to distinguish between good and evil. Under the mist and rain of a prosperous age, a secret life of an avenger slowly unfolds.