The heroine is reborn and returns to the day after her substitute marriage. She reveals in public that her stepmother was poisoned and kills her, claiming the initiative of the family in the name of "crazy". While she was pretending to have "soul-leaving syndrome" and using her past life memories to fight in the house, she secretly investigated the real cause of her father's death and discovered that there was a huge whirlpool of struggle between imperial power and descendants hidden behind it. She must fight against the entire family as a weak girl, and use the secret chess left by the "sick Yangzi" prince in her previous life to break the situation between the court and the back house.
