Three years after RPG dungeons start appearing on Earth, researcher Keigo Yoshimara enters the lucrative world of dungeon diving! Discovering a magic skill, he storms into the dungeons, armed with his wits and a savvy business partner.

Three years have passed since dungeons appeared on Earth. After accidentally gaining a skill that turns dungeon diving into an RPG, office worker Keigo becomes the world’s top explorer. Can he turn status screens into piles of cash and quit his job?