After falling asleep while reading his favorite novel, a young man suddenly wakes up inside its world—except he isn't the hero. He becomes César von Ainsworth, an arrogant noble and one of the early villains destined for a terrible fate. With a mysterious system giving him only one mission—Do Not Die—César must survive assassination attempts, political schemes, dangerous nobles, and a future he already knows will end badly. The problem? Everyone around him believes he is hiding his true personality. And the more he tries to survive... The more suspicious he becomes.