Sarada agrees to return a teddy bear to a young patient at the hospital, but she forgets it on the train and goes into a panic. Despite having dismissed Boruto and the boys for sitting on the roof of the train, Sarada does exactly that in her desperate search for the toy. Cho-Cho happens to see Sarada and takes her to the station’s lost and found. Sarada retrieves her package and all is well, until…

Boruto and his classmates are invited to tour the Hidden Mist Academy under Kagura and Chojuro's escort. The Hidden Mist emphasizes swordsmanship, and Boruto is awed by their intense training sessions. Chojuro sees Boruto's interest and arranges a sparring match with Kagura, who seems hesitant. Kagura is extremely skilled and has been asked by Chojuro to become the successor to his Great Twin Sword, Hiramekarei, but he has declined.

Boruto urges his friend Kagura to return with him, but Kagura rejects him and begins to attack. Although Boruto is desperate to save him, Kagura once again falls under a spell and is unable to defy Shizuma. Then someone steps in between the two as they battle. It's Mitsuki, and he has obtained intel about the rebellion. Just what is the intel, and can Boruto save his friend?

Originally from the Village Hidden in the Sound, Mitsuki has made up his mind to become a Hidden Leaf Shinobi. In the past, having lost his memory, Mitsuki finds himself in unfamiliar surroundings, unsure of his identity and motive. Mitsuki faces a difficult decision, but his thoughts and feelings that had once been shrouded in mystery, now come to light

Orochimaru tells Boruto and Sakura about the White Snake Sage who lives in Ryuchi Cave. On their way there, the two are confronted by Team 10, which is determined to take the two back to the village so that they are not labeled as "rogue" ninja. But there's no way Boruto or Sarada will oblige until they find out the truth from Mitsuki, so they are forced into confrontation using everything they've got!

One rainy night, guided by Mikazuki the cat, Mitsuki rescues an injured man. Mysteriously, Mikazuki seems to take a liking to the man who says he’s come to visit his sister who works in the Leaf Village. Soon after, Team 7 is assigned to back up the Leaf Police Force on a security mission. Their client is a president of a company who is being targeted by a serial killer known as "The Rainy Day Killer.

Konohamaru and Mugino continue keeping their eye on Victor's company. They receive intel that the Feudal Lord of the Land of Valleys will be touring the company, giving them the opportunity to check the inner reaches of the secretive facility. Meanwhile, Boruto and Sarada complete their training and visit the woman who requested their previous mission.

Koji Kashin continues his battle with Jigen, whose body is revealed to have been taken over by Isshiki Otsutsuki. He continuously hits Jigen with a barrage of attacks in an attempt to drag Isshiki out of his body and destroy him.

A coded message believed to have been left by Funamushi reveals that the Hidden Mist Village is in danger. Kagura tells Boruto and the others of his plan to stop the enemy at a village on the route there. Everyone hurries to the destination, and it turns out Kagura lived in this village when he was little and has many fond memories of it. When Boruto and the others arrive, they try to get people to help them as they rush to prepare their plan to protect the village and the Hidden Mist!

Kae has been taken away and Kawaki must face a dangerous assassin. Himawari acts as his partner and provides support during the battle. They try to corner the enemy with coordinated attacks, but the enemy proves to be powerful. Meanwhile, their classmates, who had entrusted Kawaki and Himawari to directly confront the assassin, take action in a desire to try to help. Will Kawaki be able to save his precious friends and accomplish his mission?