Jiang Buwan returns as the Jiang family's "disowned daughter," but she is actually the mysterious miracle doctor "Satan," secretly plotting her revenge. She establishes her authority amid family power struggles and reveals her true identity when her father is critically ill, using surgery as leverage to gradually seize the family fortune. Her assistant, Lu Jinheng, regains his memories and turns out to be "Lucifer," the ruler of a dark empire. After resolving their crisis of trust, the two join forces as equally matched partners, settle accounts with her stepmother and stepsister, take control of the Jiang family, reclaim their power, and fight the shadowy organization "Oracle." They uncover the truth behind the destruction of her right hand years ago and bring the organization down. In the end, the two break with convention and embark on a new journey together.