Takeda Junpei is a high school student that lives his days being bullied by Shouta Kido and saved by his childhood friend Tatsumiya Noriko. But one day, they’re all summoned by “God,” who cruelly claims that he’s going to relieve his boredom by sending them to a dangerous world of fantasy. Each of them is given a “job” and stats, and while Kido’s are amazing, Junpei is but a jobless weakling. With that, they begin new lives, but Junpei is soon betrayed and sacrificed to a labyrinth full of abnormal monsters. Now seething with anger, he fights tooth and nail to escape the labyrinth for revenge.