Morn transmigrates into a fantasy world where demons run rampant, vampire families stand tall in the darkness all year round, werewolves that are preparing for something in the darkness, and angels who occasionally descend into the human world. As a cardinal of the Orthodox Church, Morn had been bound to the nine-to-five system after he arrives in this world. As long as he's at work, he can obtain a large number of rewards by checking in. Therefore, having been in the ten years of the Orthodox Church, he becomes an invincible existence. Although he is the strongest in the Orthodox Church, he has one flaw—he never works overtime. "Your Holiness, Cardinal Morn personally went to the Dark Forest and killed all the dark cat demons.""Your Holiness, Cardinal Morn just returned from the Bloodthirsty Demon Abyss with the head of the Bloodthirsty Demonic Dragon.""Your Holiness, this is bad! Dracula I brought his army of vampires here to take revenge. "Pope: "Quick, get Cardinal Morn.""B-but Cardinal Morn has knocked off. He has a rule that he works 9-to-5. He never works overtime."Pope: "We're doomed. Our Orthodox Church's 300-year history shall end here."