At the center of the South Korean sci-fi series "Hellbound" is the story of people who encounter the same supernatural phenomenon. It can be seen as either a miracle or a heavenly curse. They receive a prediction of the time of their death. When that moment arrives, the Reaper appears before them and takes their life. Jeong Jin-soo, a follower of the new religion "Saejinriho," believes that the appearance of the Messenger of Death can be considered a divine sign. Blogger Park Young-jae, on the other hand, is more skeptical and wishes to uncover the truth.