Urashiki appears to steal the chakra of Nine Tails from Naruto, but his attempt is unsuccessful. In order to save Naruto, Boruto, Sasuke and Jiraiya pursue Urashiki. Jiraiya then notices that the malevolent Nine Tails Chakra has started filling the air.

Boruto and his team try to get Kokuri assigned to the same cell, but the warden, Benga, shuts the idea down. Looking for a weakness in Benga, they approach Doragu, the leader among the prisoners, for information they can exploit. Doragu is willing to give them information, but in exchange Boruto and the team must undergo a test of perseverance.

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.