Vivy, the world's first autonomous humanoid AI, sings at the NiaLand theme park. One day, AI Matsumoto comes to her with an important request from 100 years in the future.

One of the causes of the war between AI and humans in 100 years is the death of a politician named Aikawa, so Vivy and Matsumoto try to prevent the tragedy from happening.

After the incident with Assemblyman Aikawa, more people begin coming to see Vivy perform on stage. One day, Matsumoto urges Vivy to board the Sunrise space hotel with him and they travel to outer space.

AI Estella is suspected of attempting to make the space hotel Sunrise crash into Earth, but Vivy notices something.

Audiences for Vivy's stage performances grow after the Sunrise incident; Matsumoto appears again and tells Vivy that AI technology is advancing faster than what was recorded in history.

Vivy and Matsumoto use a termination program from Dr Saeki to shut down the activity of Metal Float, but this makes the AI that governs the island go out of control, and it engages in battle with Toak.