Two years after the J-pop idol group CHAM! first won over audiences, member Mima Kirigoe chooses to leave the band to pursue an acting career, a decision that draws mixed reactions from her fanbase. Despite the uncertainty surrounding this move, Mima clings to the hope that her supporters will stay loyal. As she steps away from the group, her life takes an unexpected turn. Eager to shed her idol image, she secures a role in a crime drama, a project that quickly becomes demanding and stressful for both her and her manager, Rumi Hidaka. At the same time, Mima's mental state begins to deteriorate under pressure from a persistent stalker who refuses to accept her exit from the idol world, a mysterious new website that uncannily mirrors her experiences, and CHAM!'s continued success without her. These disturbing events slowly erode Mima's grasp on reality, blurring the line between what is real and what is not.
