The imperial power of the Great Zhou Dynasty was undercurrent. Emperor Xiao Linyuan was cold-faced, taciturn, and thoughtful. He dominated the world but lived alone in Zhaoyang Palace. Xie Zhaotang, the daughter of the prime minister, has a tricky temperament and a sharp tongue. She entered the palace and became a concubine but refused to tame her. She made trouble every day by attacking the sky and the earth. On a night of thunder and disaster, there was a strange phenomenon in the world. The two accidentally exchanged souls and were forced to live as each other - he had to pretend that she was a bad guy, and she had to pretend that he was iron-blooded and majestic. The court was full of chaos and the harem was full of chaos. In an imaginary and chaotic world, Queen Shen Lingzi is ruthless and possesses power, holding a phoenix seal to hide murderous intentions; General Pei Jin is ambitious and unpredictable; the former close friend Jiang Waner also surrenders to the enemy behind his back, plotting every step of the way. The funny thing is that these enemies see through each other's sincerity in the exchange. One hides tenderness with a cold face, and the other hides sweetness with a poisonous tongue. While falling in love and killing each other, they join forces to break the situation. There is a turmoil in the court, a series of mysteries in the palace, joyful fights, intrigues and love and hate intertwined, creating a ridiculous and touching legend of the emperor and the princess.