Set during the turbulent era of the Three Kingdoms in ancient China, the story centers on the powerful warlord Cao Cao who has reached the peak of his power. As the de facto ruler of the Han Dynasty, he becomes increasingly feared and revered across the land. Meanwhile, a secret group of assassins, trained from childhood to complete a deadly mission, plot to end Cao Cao’s reign. Two of these assassins, Ling Ju and Mu Shun, are implanted into Cao Cao's court under the guise of loyal subjects, waiting for the perfect moment to strike. Ling Ju, who finds herself entangled in a web of loyalty and emotions, must navigate her allegiance while secretly planning the assassination.

As court intrigues and personal ambitions escalate, Cao Cao's character is revealed to be both complex and humane, fostering a tense atmosphere where betrayal could come from any corner. The assassins' internal struggle between duty and burgeoning personal feelings complicates their mission further, leading to unforeseen twists and moral dilemmas. Ling Ju, torn between her growing understanding of Cao Cao and her commitment to the mission, must decide which path to follow. The tension builds as the narrative approaches a crucial climax, exploring themes of loyalty, power, and sacrifice in a historically rich setting.