In her previous life, Zhu Zi'an loved her and tortured her childhood sweetheart, the Dog Emperor, for a lifetime, but was plotted against by her concubine and the Dog Emperor. She was deposed and relegated to the cold palace, and the family subsequently declined. After being in the cold palace for several years, Zhu Zi'an died in depression. Before he died, he swore that if he could live his life again, he would make the dog emperor and his concubine pay the price. After returning from rebirth, Zhu Zi'an, with the system in hand, gradually uncovered the conspiracy, sought power, overthrew the emperor, and embarked on the path of empress.
