Shen Zhiwei, who appears to be the daughter of a gentle minister, is actually a top assassin, carrying the secret order to assassinate the regent Lu Beichen. Lu Beichen, the "living king of hell" with all the power in the world, is full of scrutiny and testing of his newlywed wife. As a result, the lady thought about how to take his life day and night, while the prince waited for her to show her weakness. It wasn't until strange cases happened one after another in the capital that the two were forced to join forces. While solving the puzzle together, they discovered that the other was actually their only confidant. This assassination order eventually became the most affectionate confession.
