Everyone with a dead-end job sometimes wishes for something to come swallow up their workplace...and that's exactly what happens to Ryousuke Mizuki. Monster-infested dungeons have appeared all over the world, but he's saved from his collapsing office by a swordswoman and a pixie. Along the way, Mizuki picks up an item that allows him to pass overpowered skills to other people—and before he realizes it, Mizuki is in high demand himself!