第3話: VivyはEstellaという名前の反逆AIによる宇宙ホテル爆破計画を調査する
Fifteen years have passed since Vivy saved Aikawa and more people have come to see her performance. While the AI Naming Law ultimately did not pass, another legislation that granted AIs even more rights was created instead. One day, Matsumoto reappears before Vivy and assigns her a mission: to prevent the space hotel Sunrise from crashing to Earth when its owner, Sisters AI Estella, goes rogue, which would cause mass AI backlash. While still bitter about Momoka's death, Vivy agrees to help. However, after infiltrating Sunrise and meeting Estella, she is unconvinced that she is the culprit. Fellow AI employee Leclerc claims to Vivy that Estella killed the Hotel's previous human owner, but this is proven false as Vivi learns he actually died in an accident. As Vivi continues to investigate, she stumbles across Momoka's older sister Yuzuka, who recognizes her as Diva. Meanwhile, Leclerc is revealed to actually be cooperating with Estella to crash the hotel when the latter suddenly beheads and kills her. (Source: Wikipedia)