He is an uncertain nine thousand years old. He holds the life and death book of hundreds of officials and never uses a second knife to kill people. She is the meanest palace maid who is even afraid of cats, but she has a photographic memory and is the best at seeing through the flaws in all lies. When the powerful Quan Huan realized that this maid could see through his plan, he did something that no one expected - he pulled her onto his blood-stained chair. This is a love story about "when a monster picks up another monster", from suspicion to conspiracy, from conspiracy to unforgettable monster.