Su Cheng, an orphan girl from the Prime Minister's Mansion, was forcibly taken into the mansion as a substitute because she bore a striking resemblance to the late Bai Yueguang, Princess Yunshu, the regent Xiao Jue. For three years, she endured the pain and anger of losing his wife for Xiao Jue, kneeling on jade steps, swallowing incense ashes, and being whipped. However, after blocking his sword one time, she accidentally discovered the truth about the death of Princess Yunshu - Xiao Jue actually killed her himself. When Su Cheng fled with scars all over his body, Xiao Jue was shocked to realize that he had already carved the substitute into his bones and blood, and the real Princess Yunshu was just an illusion of his obsession when he was young. On the way to pursue his wife, Xiao Jue experienced the pain of being left out, used, and set up, and finally gave up half his life in exchange for Su Cheng's "come back".
