The sky is dark, the world is changing dramatically, the abyss, humanoid monsters, zombies, morality, humanity, survival, whether the human survivors can finally overcome everything, Yang Yang, who has been reborn, has always wanted to solve the mystery of the end of the world. The black hand behind it, but when he stepped into the abyss, he discovered that everything turned out to be... (This story is purely fictitious, and any similarities are purely coincidental.)