“Relax and enjoy a pleasant conversation with the stars.”

After the incident with Assemblyman Aikawa, more people start coming to see Vivy perform on stage. One day, Matsumoto appears before Vivy again, and urges her to get on board the Sunrise space hotel with him. While they travel to outer space, Vivy is conflicted by the gap between what she must do and her true mission.

“I’m bringing this child safely back to earth no matter what.”

Estella, an AI that works at space hotel Sunrise, is suspected of attempting to make the hotel crash into Earth. However, as Vivy interacts with Estella and gets to know her better, she begins to see a difference between the information given to her by Matsumoto about Estella. Meanwhile, someone takes control over the Sunrise hotel much quicker than what Matsumoto predicted. Amidst the confusion, Vivy investigates the cause of the situation in order to save the passengers and Momoka’s younger sister, Yuzuka.

“…What was she doing at the end?”

After awakening from her long slumber in the museum, Vivy witnesses a horrific scene where humans are being massacred by AI. The war between humans and AI has broken out, and amidst the confusion, Vivy meets up with Matsumoto. They recognize that the Singularity Project has been a failure, so they search for Dr. Matsumoto, who was the architect behind the one hundred-year journey, in order to resolve the situation.

“…What does the heart mean to you?”

“Our aim is to annihilate all of humanity.”

Based on the calculations of the Archive, the integrated AI database, humanity is now on the brink of extinction. As the countdown to human extinction begins, Vivy and Matsumoto decide to join forces with their archenemy, Toak, in order to plan a strategy to break into Arayashiki, the core of the Archive. However, Matsumoto notices a possible solution which he presents to Vivy, after she is contacted by the Archive.

“…My mission is to bring happiness to everyone with my singing.”

Vivy was the first AI to write a song with her own will. As the first AI to utilize her own creativity and being the AI that has had the most contact with humans in the one hundred-year journey, the Archive entrusts Vivy with a choice that will determine the survival of humanity. Vivy is almost crushed by the weight of this responsibility, but after being urged on by Matsumoto, who has been her partner for the last one hundred years, and seeing Dr. Matsumoto’s risk his life for everyone, she executes the Singularity Project in order to save humanity. Using this last chance, will she be able to fulfill her mission of bringing happiness to everyone with her singing?