Wen Nianshu, a modern medical and poisonous killer, disguised herself as the foolish legitimate daughter of the prime minister's palace and married the regent Ye Wuchen who was rumored to have killed five princesses. On their wedding night, she pretended to be stupid and cute, but secretly used a silver needle to prolong his life. No one knew that the real mission of this "idiot princess" was to find out the truth about the Queen Mother's poisoning of Concubine Shu twelve years ago. When Ye Wuchen discovered that the needle marks on her hand matched the relics of her mother-in-law, and when she discovered that his body was bleeding with the same blood as the Queen Mother's, was this marriage that began with a transaction a redemption, or another long-planned revenge?
