Zhu Yuan, the Immortal Official of the Three Realms Marriage Department, was demoted to the mortal world because of his misjudgment of mortal fate. He has a special mission - to be in charge of the "Accounting Book of Evil Destinies", which specializes in collecting those "wonders" who are lonely because of their own sins, and uses marriage as a blade to punish them for their past evils.
Her "Zhu Yuan Pavilion" never came from a good place, and everyone who came in deserved it: a "modern emperor" who abided by thousands of family rules and looked down upon others. Zhu Yuan connected him with an eloquent fox demon, and countered with more stringent "demon rules" to let him taste the taste of being dominated; A stinking woman who feels like nothing to others is married to a dung beetle spirit who feeds on "filthiness", and has been trapped in the struggle for survival ever since; a man with a hidden disease who deceives his partner and hurts others with cold violence due to his low self-esteem is waiting for a flower demon who can control his emotions, making him live in the painful reincarnation of being let down all day long.
In the marriage book, every deception and every betrayal is clearly recorded in the book. The accumulation of sins will lead to a lifelong trap of bad fate and no good ending. Zhu Yuan looks at the situation coldly from the perspective of a god, and uses a seemingly "natural match" to make the evildoers suffer the consequences.
This is not a matchmaking place for good matches, but a trial court for bad matches - every bad thing you do will lead to your own "satisfactory" marriage.