Nintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck!

When the students of the Ninjutsu Academy come back from summer break, they learn that Komatsuda messed up and mixed up all their summer homework. Kisanta ended up with an assignment meant for a sixth-year student-stealing the lord’s fundoshi from Oomagatoki Castle-and has since gone missing after attempting the mission. A team including Shinbei and Kirimaru is sent to rescue him, but with Oomagatoki Castle at war with Tasogaredoki Castle, the task won’t be easy. Meanwhile, the Ninjutsu Academy gets a plea for help from a village caught in the middle of the conflict. Rantarou, along with the remaining students and teachers, sets out to lend their support.