Shen Yuezi, a simple and kind-hearted girl with the personality and strength of a boy, disguised herself as "Master Mo Lan" to punish evil and promote good, but unexpectedly fell into a huge conspiracy. The grievances and grievances of the previous generation must be repaid with blood. Whose wish comes true for such repayment? Among the three major killer organizations in the world, one fights to protect her and the other two swear to take her life. Amidst the constant joy and laughter, there is always a pair of eyes with endless killing intent. Among the people involved in this conspiracy, who are the enemies and who are the friends? The wicked and infatuated fourth prince was her childhood sweetheart; the wealthy eldest prince was entangled with her because of a poem; the master of the Qingmen who originally wanted to take her life used his life to protect her; the gentleness of the man he liked was originally a trap, and eventually her affection was completely wiped out. When the truth gradually emerges and approaches step by step, who is the mastermind of the conspiracy, and where should they go? In the conspiracy, who is truly moved, and who is just trying to deceive?