Lu Tangtang, the legitimate daughter of the Lu family, was poisoned by her entire family. After her death, she was bound to the "Evil Girl C-position Debut System" and traveled through different fictional historical worlds. But every time the system assigns a "vicious female supporting role" or "cannon fodder" script - the villain daughter, the stupid concubine, the queen who is taken advantage of, and the substitute tool man. However, Lu Tangtang did not tear up the script. She chose to "get into the role" and redefine the "evil girl": using the identity of the villain's daughter to secretly protect the daughter of her father's enemy and forming an alliance, using the shell of a stupid concubine to provide good strategies for governing the country to the tyrant, not whitewashing but transcending - turning the villain's identity into a real big picture.