In the Kumen Republic, which is still in constant conflict, the government military president and his bodyguards are being oppressed by coup d'état forces and are trying to flee the capital. The president was none other than Chirico's comrade Potalia.

Vanilla and the others descend on Kumen in search of Kiriko, and with Gout's help, they enjoy the revival of the Phantom Club for one night only. Cocona dressed as a diva, former regulars... The fugitive president also received an invitation.

Sansa is a planet where sandstorms are still raging. Kiriko has been living in Sophie's scrap metal shop and has been cutting the steel frame of a giant battleship for three months. Sophie, who lost her eyesight after a long and harsh environment, has no idea that the young man she cares for is actually Kiriko, whom she once hated as her enemy.

While Kiriko is away, Sophie's office is suddenly attacked by AT. She realizes that this is a plan to have Sophie tied up in her arms and legs, but Kiriko walks through the desert carrying her on his back.

An unknown energy sends Kiriko to the edge of the galaxy called "Horse's Mouth", where the people of the disappeared planet Quent live.

At the bottom of the valley, in the village of Le Shaco, a baby is about to be born, and if it is judged to be the child of God, it is a rule that it must undergo further approval at the temple of Gomor. Tribal leader Tedaya is wary of attacks on the way and requests Kiriko to protect him.

Chirico and Le Shaco fall into the basement of the temple and witness an underground tree that is the underground stem of Gomor's Tower. She fights off the AT in the temple, but suddenly a mysterious creature wraps her in a cocoon and steals her baby. Juno, who was once abandoned as a child of God, appears and saves the two who are unable to move.

He and Juno try to get the baby back, but the god of Nulgeland has prepared various trials to dig into the depths of Kiriko's memories...

While both fleets of Gilgames and Balarant stare at the planet Nulgeland, Pope Montewels enters Gomor's Tower. The Pope meets the former god Wiseman, who has repaired himself over time, and requests that he be entrusted with the upbringing and guardianship of the god's child.

Meanwhile, Kiriko breaks through the underground tree and is invited into the space where Wiseman and Ako are sitting. After 30 years, the fateful showdown between Chirico and Wiseman begins again...