The movie follows Eizan, Jimmy and Okuni during the summer holidays. The three friends soon engage in an interesting albeit dangerous struggle for reputation, family, and a whole lot more when Eizan's dad is kidnapped by professional ninjas.

As the School prepares to celebrate the anniversary of the town's foundation, a mysterious Ninja from Katana School makes off with Tokiro's (the city's father) famous flip-flops. According to tradition, Shuriken presents these flip-flops to the public during the commemorative parade. If Shuriken School cannot produce them, the school's entire assets will be handed over to Katana School!val school Katana.more

Vlad tells students that they'd better revise for the traditional class photo. Revise for a class picture???? Eizan learns that the "photo" is in fact a test. As the camera clicks, every student has to vanish. A Ninja's first quality is secrecy, and it's out of the question for them to be "captured" on film. Nobunaga, unfortunately, is unable to disappear. The entire class joins forces to teach him vanishing techniques in record time.

In the perspective of an exchange program with an American school, Shuriken welcomes three students from a… Cheerleading Academy! The only school prepared to take on all the costs for the exchange. At first, our Ninja students aren't too enthralled with the new kids. Cheerleading has nothing to do with Ninjitsu skills!more

Great Master Otomo is visiting Shuriken School, and holds a conference about the ancient art of eating rice balls. The class is bored silly and the Principal watches Otomo gulp down one rice ball after the other with suspicion. When Otomo sees that neither class nor teachers are interested, he announces that a Great Philosopher living up in the mountain above the town handed on this precious knowledge, which has enabled the hermit-philosopher to...

The students are busy cleaning, tidying and polishing the school in preparation for a visit from Shuriken's alumni. While students and staff solemnly wait at the Main Entrance an old man appears, leaning on his cane. This is Aiko, the one and only Alumni member to reply to their invitation. He is overjoyed to see the Cleaning Lady again, his erstwhile sweetheart. The students are astonished too see such a dishevelled Ninja.more

Winter has covered Shuriken with its coat of snow and fog. Visibility is down to a bare minimum and the fog lends a scary appearance to the smallest of bushes. How will the students be able to take their important end of term practical exams in weather like this? The Principal moans, but Kita, as she's flipping through one of Eizan's books, has an idea… The next day, without knowing how they got there, the students wake up to find themselves aboard...

Eizan, Jimmy and Okuni see a secretive Ninja tell Vlad that he's failed Evasion Techniques for Experienced Ninjas -- the final exam for the correspondence course he's been following. When he was still a student, Vlad didn't have time to finish his exams and he doesn't have the require detaching diploma. To his despair, all he can do is resign from the School, but Eizan and his friends come up with a plan to prevent their favorite teacher from quitting....

Something's gone terribly wrong with Eizan's father's rice ball business. All the costumers are complaining about the rice balls. They taste like dirt. It's awful. Business is falling off in landslide proportion. And Eizan soon discovers that the only thing worse than all those rice balls is no rice balls! With the rice ball business going bankrupt, Eizan's family is going to have to move and go back to the family farm on a distant island ... which...

Kubo is in seventh heaven: Kabuki is getting closer, and for several years now, he has been the director. This year, he's decided to pull the roles out of a hat, and the main role ends up going to Eizan…to his great despair! When it comes to getting up on stage, Eizan falls to pieces, especially knowing half the town will come and watch the show! Rehearsals begin but the play is sabotaged by a mysterious ghost who turns the stage upside down!more...