On their wedding night, Lin Nanxi was personally poured poisoned wine by her husband, just to free up the position of concubine for his Bai Yueguang. When she was on the verge of death, she was rescued by the rumored cold and violent Prince Jing, Wei Chengxuan. He pinched her chin and sneered: "Want to take revenge? Become my king's sword." She tried her best to become a pawn, but when she stirred up the storm in the capital, she discovered that all the betrayals and calculations were actually pointing to a shocking secret that had been buried for ten years. But when she finally put the dagger to her enemy's heart, the cold-faced prince hugged her from behind and said in a hoarse voice: "Xi'er, I want this world and you."