The heroine vindicates the grievances of the Xue family and marries into the old enemy Pingyang Hou Mansion in the name of happiness. In the inner courtyard of the Hou Mansion, everyone has their own agenda. From the vicious mother-in-law, the hypocritical stepmother to the scheming concubine of White Lotus, everyone wants to kill her. On the wedding night, a bizarre murder occurred in the Hou Mansion, and all the evidence pointed directly at the heroine. Facing a desperate situation, the heroine relied on the investigation, autopsy, and reasoning skills learned from family secrets to solve the strange case within three days, uncover the real murderer, shock everyone, and reverse her own disadvantage in one fell swoop.
After that, the heroine used "solving crimes" as a weapon and started the "house fighting detective" mode in the cannibalistic cage of the Hou Mansion. Using the "Nursery Rhymes in the Haunted Home" case, she dug up old secrets about her stepmother's affair; using the "Pharmacy Stealing Suspense" case, she uncovered the mole who administered chronic poison to the male protagonist; using the "Painted Skin Bride" case, she revealed the true identity of White Lotus's concubine. The detection of each case makes her position in the Hou Mansion more and more stable, and she gradually gets closer to the truth about the destruction of her family. Her sick and frail husband, who was originally cold and distant to her, was also attracted by her wisdom and tenacity. The two of them changed from a contracted couple to a true soul mate. They joined forces to fight against the many conspiracies inside and outside the Hou Mansion, and finally uncovered a shocking case involving a power struggle in the royal family. The injustice was vindicated and power was transferred to the opposition.
