Lin Youyou, a modern social animal and funny woman, wakes up and travels back to ancient times and becomes the Queen of Liuli, a powerful, ruthless and beautiful enemy country's spy. She also has a hellish mission tied to her: to assassinate the emperor Xiao Yan! However—someone else's secret agent poisoned her invisibly. She took it as a laxative and squatted outside the emperor's palace to confess: "Boss, I was wrong. Are you okay with going to the toilet?" Others' secret agent's nighttime visit to the imperial study room felt like a deserted place. She visited the imperial dining room at night and ate sweet-scented osmanthus cake and was caught. She insisted that she was sleepwalking. Others used their tricks to seduce the king and cause harm to the country and the people, but she twisted her body seductively... And moved her waist! Xiao Yan, the young, handsome and sinister emperor, soon discovered that his queen had completely changed "on the inside". The woman in front of him behaved unconventionally and spoke shocking words. She could turn the palace rules upside down, but she also made his life more interesting than ever before. Knowing that she had "ghost fetuses" in her heart, he insisted on staying by his side and fully cooperating with her "performance". Seeing her trying hard to maintain the cold-faced killer persona but falling over every day, he smiled meaningfully: "How do you plan to take my life today, my dear concubine?" Lin Youyou: "... Your Majesty, let's talk about it, can we deduct money if the mission fails? If you don't want to die, just make enough jokes!" Thus, the most outrageous combination of emperors and empresses in history was born!