“Who are...you?” Mima Kirigoe, a former pop idol, makes a bold transition into acting, taking on a role in a drama that includes a disturbing assault scene, and even releasing a provocative nude photo book. Her dramatic reinvention grabs public attention, but also provokes unease among her fans, her manager, and even herself as she struggles with the rapid shift from her days as a pop idol. As a stalker begins to shadow her, a screenwriter and a photographer are murdered one after another. "Did I kill them?" Mima begins to wonder if a split personality is gradually taking over, just like the character that she plays in the drama. Then "the other Mima" the pop idol who was supposed to have "graduated," appears in front of her…