In order to repay the debt of gratitude he owed, the Thousand Year Fox Demon possessed the body of the Prime Minister's concubine, Jiang Qisha, who had died in injustice, to avenge her death. Fighting with his stepmother and bullying his direct sister, he could easily become the Crown Prince's concubine. The path to revenge was just around the corner. But what was going on with this man called Meng Hehui? Despite knowing her identity, she was still able to maintain a straight face and go against her at every turn!