Hansu Lee spent nine years mastering every corner of the RPG Dungeon and Stone. The moment he reaches the final boss gate, a system message welcomes him to the tutorial: he has been transported into the body of Bjorn Yandel, a low-tier barbarian at the bottom of the game's brutal hierarchy. Completely expendable and required to raid deadly labyrinths for tax money, Hansu survives by concealing the analytical mind of a veteran gamer behind Bjorn's expected brutishness.