Lee Hojae had given up his life as a pro gamer, until one day he received a mysterious message: "Congratulations! You've been invited to the Tutorial World." Intrigued, he enters the game and confidently chooses "hell" difficulty, but soon learns that he is trapped there. With a mere 0.01% survival rate, Hojae must somehow overcome the game's agonizing challenges to figure out the real reason he was invited. This tutorial may be tough, but its secrets are what's truly hellacious.