As Sarada and the others hurry to evacuate the people of the island, Boruto grows anxious when he learns they are being threatened by the mobile fortress, which is equipped with a powerful weapon. Kagura, Hebiichigo and Kyoho show up to assist Boruto, Kawaki and Buntan. Together, they do what they can to destroy the weapon to protect their friends, but they are obstructed by Tenma and are forced to fight him.

Mitsuki worries when Mikazuki the cat goes missing. Mitsuki, Boruto, and Sarada are assisting with the village patrol at the request of the police department, which is having difficulty investigating a strange series of attacks. From morning until night, Mitsuki spends his days on patrol, when one day, he sees Mikazuki being cared for by another person and being called by another name!

Kawaki and Himawari’s class goes on a field trip to an uninhabited island in order to create new memories with Kae. Because of its distance from the village, there are all sorts of rumors about the island, and bizarre incidents occur, like the disappearance of the food they brought. The field trip suddenly starts to feel unsettling, but under Hana Sensei’s direction, the students try to work together to overcome these difficulties. Meanwhile, Kawaki suspects the assassin targeting Kae might be lurking nearby, so he steps up his watch.

While everyone is exhausted from Ouga’s experiments, a test subject talks about their goals, which leads everyone to talk about what they want to do if they survive. The mood is lightened, but Ouga begins a new experiment. Due to the careless actions of certain test subjects, everyone's lives are in danger once again.

Naruto falls ill, and Sasuke goes to the Tatar Observatory to try to find a cure.

A swarm of dragon-beasts suddenly appears at the Observatory, throwing everything into chaos. When Sasuke and Sakura learn that the director, Zansul, has horrifying ambitions, they split up to try to stop him. Sakura gets back to the Observatory first, but the building collapses while she’s still inside. Meanwhile, Sasuke catches sight of Zansul and his accomplices. He tries to join up with Sakura but is unable to find her. Trapped, Sakura faces a precarious dilemma.

Will Sasuke and Sakura—the most powerful couple in the Village Hidden in the Leaves—be able to crush Zansul’s ambitions and safely return with the Ultra Particles to save their friend?

Boruto makes a desperate decision to prevent Momoshiki from taking over his consciousness again. Meanwhile, Kawaki drives back Code using the Karma that Amado revived. Willing to do whatever it takes to eliminate anyone who is a threat to Naruto, Kawaki fights with overwhelming power. Shikamaru is shocked by his strength, and Code learns the difference in their powers. Boruto and Kawaki have overcome various obstacles as brothers, but a troubling shadow begins to loom over their relationship. As Momoshiki once said, the fateful moment that will take everything from Boruto is approaching!