In the world of Mobius, people do not have to endure the pain of the real world and can enjoy high school life in the virtual world. The protagonist in this world realizes that they are actually living in a virtual world. Therefore, he created the "Return Home" with the purpose of escaping Mobius and the program Mi that monitors this world. During the escape, the Return Home Club needs to fight against the group of music who are Mi's supporters. The members of the Return Home Club are regarded as traitors.