The heroine who was reborn as a ghost doctor was given a marriage gift, but when she was treating her husband, a sick prince, he discovered that there was a poison in his body. In-depth investigation revealed that many people in the back house were controlled by the poison. She gradually solved the conspiracy of all parties with her medical and poison skills. In the palace and house fights, she grew from the despised bride of the bride to a master of medicine and poison who controls the overall situation.
