Five years after the Sunrise incident, AI development has progressed much more compared to the original timeline, as has Vivy's idol career. Deeming the AI progress to be out-of-control, Matsumoto gives Vivy a new mission: disabling an unmanned AI factory named Metal Float. To do so, they approach ex-Toak member Tatsuya Saeki and procure a virus that will allegedly shut down the facility. Vivy also meets Tatsuya's AI attendant, Grace, and Matsumoto explains that they were the first human-AI couple in the original timeline, which now never happened due to their alterations...