Genius divine doctor Luo Jiaojiao time-travels into a book to become the tragic, wicked Ninth Princess. To complete the system task and return to modern times, she outwardly maintains an overbearing persona while secretly winning over the future tyrant—the gloomy hostage prince Rong Zhen. She thought this was merely an alliance of mutual benefit, only to underestimate the boy's quietly breeding paranoia and possessiveness. Facing an obsessively deeply-rooted villain, Luo Jiaojiao elaborately planned a 'feigned death' scheme. Is this truly her perfect escape route to safety, or the fuse that completely ignites his madness?