When an ordinary man falls victim to the classic truck-kun incident, he finds himself transported to a mystical world with an unexpected opportunity. Rather than pursuing the typical hero's path, he makes a bold decision: to become a dungeon itself. What begins as a curious experiment in unconventional living transforms into a chaotic adventure filled with eccentric encounters, dangerous trials, and unexpected humor. As he navigates the peculiar existence of managing his own dungeon realm, he discovers that this strange new life offers far more complexity—and comedy—than he ever imagined. Watch as an unlikely dungeon master learns what it truly means to build, defend, and survive in a world where the rules are anything but ordinary.