Battleship Island

Naruto and the crew emerge from a storm while on their way to the Land of Lightning. They find themselves under fire by makeshift battleship cannons built on a pirate-owned island and controlled by Captain Gataro with intentions to sink the boat and harvest the remains. Losing his headband during a brief scuffle with Gataro, Naruto is rescued by Yamato's Wood Style—encasing their ship into a submarine-like shell and escaping to an underwater cavern underneath the island before breaking apart. While Yamato recuperates after finding a hot spring, the others find a mass graveyard which Aoba deduces from a parchment to be the original island residents forced to spend the rest of their lives in the caves after the pirates took their home and slaughtered their friends. Naruto takes a ribbon from a grave and uses it as a temporary headband, promising to avenge the islanders. With a clever plan of sending his clones to disable the cannons and using the underground hot spring, Naruto and his group rocket their ship up from the island's dormant volcano and back into the sea while wiping out the pirate fleet. Leaving Gataro and his men tied up and regaining his headband, Naruto plays his final respects to the islanders.