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....

A mysterious demon creates havoc in the school, spreading rubbish throughout the corridors and classrooms. Not only are students terrified by this mystery phantom, but also they get punished by the teachers, who blame them for the mess. Our three heroes try to understand what is going on here, and find out who the demon really is. They are in for a few surprises!

Kubo has been so terribly boring lately that no one can listen to his classes. If this continues, the kids will end up a year behind. Our three heroes decide to intervene. They want to find out WHY Kubo is so deadly boring. They follow him, and learn that Kubo not only has a very boring life, but that he mutters the same name in his sleep every night: "Torofi". They set off to discover the identity of this mysterious Torofi, travelling back into...

As Eizan, Jimmy and Okuni are wandering through the shopping mall, a woman has her bag snatched. Our heroes chase after the thief, and, with Ami's help – who was in the middle of doing her shopping – they stop him in his tracks in a most spectacular way. When they take the bag back to the owner, Ami recognizes that it's the famous TV presenter from «Whiz Kids».more

The Principal tells the students that an election for class leader will soon take place… no ordinary event, this happening is known as a Ninjalection. In this case, the most ingenious candidate gets the most votes… Thus begins a battle for votes between two candidates: on one side Ami (with Tetsuo and Yota in league as campaign managers), and on the other, Okuni, (supported by Eizan and Jimmy). The Principal keeps an eye on their adventures as...

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.

Bakufu, the famous Ninja master, offers to teach at Shuriken School. The Principal doesn't dare refuse, but Bakufu's fee is exorbitant. While the Principal attempts to come up with moneymaking schemes, a mysterious thief starts stealing things from the students.

One night, the Principal comes across a Mysterious Ninja in the school corridors. The Ninja gets away from the Principal, but drops his backpack. The Principal finds all sorts of trophies from Katana School inside. He is just getting over the shock of his discovery when the Mysterious Ninja reappears, snatches the bag away from him and vanishes yet again. The next day, the Principal calls an assembly and asks the guilty student to confess. But no...

To increase the school's income, the Principal has accepted to house three young stars from the music industry in need of calm and tranquillity. The atmosphere at Shuriken is morose. The stars snub their hosts, their manager is unbearable, and the gym is out of bounds for the budding ninjas. Outside, fans, photographers and TV production vans have flocked in, as if by miracle. Shuriken resembles a besieged fort.more

When all the kids start acting crazy in their sleep, it threatens to get everyone expelled from Shuriken School. It's as if all the inner demons of each student are being released in their sleep. Eizan, Okuni and Jimmy must get to the bottom of this mystery … all they have to do is not fall asleep … stay away … stay … awake …