One day, dungeons started to appear in the world without warning, causing people to manifest a special power called “Job” and changed the world forever. Yotsuka, a high school student who is a dungeon explorer, works hard to explore dungeons while also streaming his adventures as a small streamer. While trying to leave the dungeon after finishing his exploration as usual, he hears a girl’s scream and rushes to the scene. There, he finds his long-estranged childhood friend and popular streamer, Azami, who has been cornered by a powerful monster. When Yotsuka saves her, his channel went viral and he starts to gain a lot of attention. Through his streams, viewers get to witness his excellent skills and his strange fate.