The Mu family was falsely accused of collaborating with the enemy, and their legitimate daughter Mu Wan was forced to marry the frail prince Xie Heng, known as the "Living King of Hell". On the eve of entering the palace, she accidentally inherited the lost "Poison Scripture" passed down by her family, and was determined to use poison to protect her family and take revenge. On the surface, Xie Heng is suffering from coughing up blood and does not care about political affairs, but in fact, he is secretly cultivating power. At first, he wanted to use Mu Wan as a pawn to check and balance the enemy party. However, after witnessing her using "Milk Powder" to kill the framers and using "Drunken Soul Incense" to extract confessions from spies, he became paranoid and possessive. When the queen saw Mu Wan as a thorn in her side and set up a poison banquet to frame her, Xie Heng actually used himself as bait to protect her from the poison, saying hoarsely: "My people can only die in my hands." The two went from testing each other to joining forces to break the situation. In the sea of blood in the harem, while tearing apart the White Lotus concubine and liquidating the family's enemies, they fell into the pull of "he imprisoned her body, she bound his heart".
