Boruto, Sarada, Mitsuki, and Kawaki arrive at the dimension that Naruto is trapped in, but Boro is there waiting for them. The four create a team with Sarada leading them to fight Boro, who uses a black mist to paralyze his enemies.

Traveling merchants have been attacked by vicious robbers. Wasabi, Namida, and Tsubaki of Team 15 are sent to the site of the incident to investigate. Tsubaki finds a clue that seems to point to samurai from her homeland, the Land of Iron. Furthermore, the clue belongs to a certain person that makes Tsubaki tremble in fear. That person is someone that she respected long ago, a fellow apprentice with whom she trained and honed her swordsmanship with—someone with whom Tsubaki shares a certain fate!