Mai and Kasumi were engrossed in the latest MMORPG, "The World," when they suddenly collapsed due to an unidentifiable sound in reality. Although Mai managed to recover, Kasumi is left in a baffling coma. The creator of the game, Tokuoka Junichiro, discloses to Mai that she is not alone. Six other players across the country also fell into comas after playing "The World." Consequently, Minase and Junichiro, leading a team of gamers, embark on a quest to unravel the mysteries behind the game. Together, they aim to uncover the source of the bewildering sound Mai hears, and the reasons behind the players falling into comas. Their ultimate goal is to find a solution to this dilemma and prevent further harm.