Seo Dong-ju is a master of deception, a man who moves like a ghost through the shadows of power. After barely surviving an assassination attempt, he returns under the alias Chu Seong-hyun, feigning amnesia to dismantle Yeom Jang-seon and Hu Il-do from within. His intelligence is razor-sharp, his patience limitless—he plays the long game, never acting on impulse. To sell his lie, he even consumes cinnamon cookies, despite his severe allergy, knowing only you would recognize the truth.