In the year 3200, the wasteland apocalypse began. The sun swelled to many times its former size, the land became scorched earth, meteorites fell from the sky, and monsters ran rampant. Humanity migrated underground, and the world's old rules collapsed completely.
Nuclear pollution, cosmic radiation, and genetic pollution became the three great threats to humanity. Genetic technology, AI technology, and space technology became the three pillars of human survival.
The largest human survivor base was established on the Eastern Continent, known as the [Huaxia Underground City].
The meteorites carried spaceborne viruses, causing animals and plants on Earth to mutate. Human genes evolved as well, producing fighters adapted to the post-apocalyptic environment, known as "Sentinels."
Evolution came at a terrible cost. Sentinels were not only short-lived and infertile, but could also go berserk and die in battle.
Then, a boy suddenly changed the fate of the Sentinels. Humanity called him a "Guide."
The boy and humanity's strongest Sentinel became teammates and set out together on the "Sunset Plan," only to discover the truth behind the apocalypse...
