Saguru Oana is a passive guy with no money, no job, and no girlfriend. Desperate for cash, he downloads a shady-looking app called Dungeon Go! Only to find himself pulled into a dangerous game of real dungeon exploration. But for some reason… he suddenly gains a cheat ability right from the start?! After rescuing a girl named Kyoko from a monster and teaming up with her, their skills turn out to be an insanely good match. Together, the two of them start raking in huge amounts of money with ease!! A clueless guy’s sudden-turnaround, big-earning dungeon adventure begins now!