In 2077, the "Duplicate Passage of the Heavens" suddenly descended on the earth. Sci-fi dungeons such as mechanical mazes, biochemical restricted areas, interstellar battlefields, and cyber desert cities were randomly opened. The strange creatures and advanced technology in the dungeons not only brought a crisis of extinction, but also concealed opportunities to change their destiny - some people relied on the genetic medicine in the dungeon to break through the limits of the human body, some used alien technology to build a business empire, and some even obtained the ability to live forever in the dungeon.
Lin Feng is just a mechanical repairman struggling at the bottom. His parents disappeared when the "Machine City" copy was opened, leaving only a "Core Fragment of the Heavens" that could not be activated. Just when he broke into a low-level dungeon to find his parents and almost died, a mechanical voice suddenly sounded in his mind: [The system of the dungeon of the heavens has been bound successfully!
