In the bustling city of Seoul, South Korea, lives a young man named Min-Joon. He's an avid reader, spending most of his free time immersed in the world of novels and fantasy. His favorite escape is an old, dusty book he found at a local bookstore, "The Chronicles of Aetheron.

One quiet evening, as he delves into the book, something extraordinary happens. A strange sensation washes over him, and before he knows it, Min-Joon finds himself no longer in his cozy room but within the pages of the very book he was reading.

To his utter shock, Min-Joon discovers that he has taken over the life of Cedric De Montague, the story's main antagonist. Cedric is a character he despised for his cruelty and villainy throughout the novel. Now, Min-Joon must navigate the intricacies of this unfamiliar aristocratic world, grappling with the challenges of being the villain.

As Min-Joon tries to make sense of his situation, he faces a moral dilemma. Can he change the course of the story and turn a villain into a hero? The fate of both worlds depends on his choices as he battles against the expectations and dark legacy of Cedric De Montague.