Miu Takigawa receives a suspicious letter from talent agency, G.I.P. Eight young girls including Miu are brought together by the hands of fate. The letter says, “You will be joining an idol group and debuting on a major label.” A man named Aida takes them to a top-secret underground facility with a mysterious “wall.” Miu and the girls experience a whirlwind of light and darkness as they make their way to the stage…

After the eight members of 22/7 gather and confirm their love for the group again, the Wall, which had been silent since the disbandment press conference, starts to speak again.