Мёбиус — место, где вы будете свободны от ужасов реальности, где любое ваше желание будет исполнено. Управляет этим местом виртуальный идол Мю, которая смогла обрести сознание. При помощи своих песен Мю заманивает людей в цифровой рай, созданный для тех, кто страдает. Оттуда — нет выхода в реальность, там — нет понятия возраста и пола, ведь все равны. Однако есть те, кого не устраивает такое положение вещей. Объединившись, девять несогласных ребят создают «клуб возврата домой», их задача — как можно скорее выбраться из этого проклятого мира. Но им предстоит также справиться и с главным врагом — самой Мю…

What is happiness? Ever the fan of psychology, questions such as this are ones that high school student Ritsu Shikishima likes to ponder as he spends his peaceful days with his friends. His perfect world, however, begins to unravel when he hears a strange voice obscured by static, pleading for help. This voice belongs to μ, a beloved pop idol, whose singing begins to have an adverse effect on the world. Before Ritsu's very eyes, the faces of his friends and family become distorted by glitches as the sound of μ's voice transforms them into Digiheads: berserk monsters bent on the extermination of all those who begin to awaken to the true nature of their existence.

Realizing that he is trapped in a virtual world created by μ called Mobius, Ritsu must now gather everyone else who has managed to realize the truth before they are all eliminated. Together, they will use their newfound powers and weapons granted by their emotions—known as the Catharsis Effect—to fight off the mysterious group known as The Ostinato Musicians as they struggle to escape.

[Written by MAL Rewrite]