Synopsis
In this movie, the Dokutake ninja steal a shipment of saltpeter from Shinbei’s father, planning to use it to create a potion that grants flight and enhanced ninja skills. Danzou, Shinbei’s brother, secretly boards the transport to retrieve it and ends up captured, brought to the Dokutake's secret hideout. Upon learning of the situation, Shinbei alerts the academy, prompting Yamada-sensei and Doi-sensei to rush to help, while Hagumi decides to attempt a solo rescue. However, their plan goes awry, leading to the entire group being taken captive. Luckily, Rikichi, the calm son of Yamada-sensei, intervenes to assist them. As more join the rescue mission, the question remains: can Rantarou and the team stop Happousai before it's too late?
