Su Wanqing, the prime minister's daughter, possesses the miraculous ability to predict dreams, and is accidentally involved in a bizarre crime. She goes from tit-for-tat confrontation with the cold and suspicious commander Lu Yi to solving the problem side by side. She used dreams as a guide and proved her innocence with wisdom and justice; he was the emperor's powerful sword, with an iron face and cold blood that sealed his heart. The two worked together to solve a series of major crimes, and gradually fell in love during the test of life and death, but they were also deeply involved in the national master's shocking conspiracy to "change the sky". From testing each other to agreeing to life and death, she redeemed his loneliness, he protected her purity, and finally found true love amidst the turmoil of his family and country.
