Saguru is a passive man with no money, no job, and no girlfriend. In order to make money, he downloads the suspicious app Dungeon Go!.Its a dangerous game in which he is appointed as a dungeon explorer where death is always close by...But for some reason, he suddenly gains cheat abilities!?When he forms a party with Kyoko, a girl he rescued from a monster, they find that their skills are a perfect match!The two of them end up easily earning a large sum of money――?The story of an insensitive man who makes a comeback in a dungeon and makes a killing begins here!