A programmer approaching his thirties, Ichirou Suzuki, is overwhelmed with his workload. Exhausted, he finally has the chance to catch up on his sleep, only to wake up and find himself in a fantasy RPG world that is made up of the games he debugged in real life. As he navigates this new place, he realizes that he has transformed into a younger version of himself and that he now goes by the name Satou, a moniker he used during game beta testing. But Satou's exploration comes to an abrupt halt when an army of lizardmen suddenly attacks him. To protect himself, he unleashes a powerful spell that obliterates the attackers and instantly elevates his level to 310, granting him optimal stats. Now, equipped with numerous abilities and unable to return to reality, Satou charts a course to discover the wonders of this fantastical world.