In a post-apocalyptic world, four giant circular walls separate humanity from the world of alien species, also known as the Doomsday Ring. Lü Luo unexpectedly arrives in this world. When a sudden crisis leaves him helpless, a message appears before his eyes: 【You're so weak it's suffocating. Although you've awakened S-02-Devourer and S-04-Fuser, it's basically useless. The only thing that can truly help you escape this crisis and lead you to the peak of your life is sequence S-11 Observer.】 【The above evaluation comes from the insightful analysis of the noble S-class sequence-11: Observer.】 Lü Luo: "?This evaluation is so insightful!" ... 【S-02-Devourer】 Devours all energy and matter, providing all energy foundations, and can even devour other sequences...