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Ninja Kids!!! (2011) movie poster

Plot Summary

Ninja Kids!!! (2011) Plot Summary Explained

Release, runtime and language
2011 · 99 mins · Japanese
JustWatch #16,883 3
Directed by
Takashi Miike
Starring
Susumu Terajima, Tamao Nakamura, Takumi Kitamura, Akira Emoto, Shun'ya Shiraishi, Naoto Takenaka

Seishiro Kato plays Rantaro, a boy sent by his parents to a strict ninja training school. Over the summer, the school's instructor is attacked by rival ninjas, prompting the students to embark on a frantic race up a mountain to ring a bell that signals victory.

On this page (5)
  1. 1 Where to watch
  2. 2 What happens: full plot
  3. 3 Plot questions answered
  4. 4 Movie threads
  5. 5 Every angle

Where to watch

Where to Watch Ninja Kids!!! (2011)

Where can you watch Ninja Kids!!!? Stream, rent or buy it in the US, including on Amazon Prime Video, fuboTV and Fawesome: current JustWatch availability with up-to-date prices.

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Full plot summary · contains spoilers

What Happens in Ninja Kids!!!: Full Plot Summary

The whole story of Ninja Kids!!! (2011) explained, from the opening scene to the final frame: every key event, every twist and what it all adds up to. Read it as a quick recap before the sequel, to check a scene you missed, or to finally understand what really happened.

Set in the Muromachi period in early 16th-century Japan, the story follows the young ninja Rantaro Seishirou Katou, born into a family of low-ranking ninjas. His parents, Father Shido Nakamura and Mother Rei Dan, send him to attend a six-year Ninja Academy run by Denzo Yamada Susumu Terajima. Rantaro's homeroom teacher is Hansuke Doi Takahiro Miura, and the head of the Ninja Girl classes is Shina Yamamoto, who appears as either a beautiful young woman Anne Watanabe or an older woman Tamao Nakamura. After going home to his parents' farm for the summer holidays, Rantaro is joined by his schoolmate Shinbei, but they later decide to stay with Kirimaru Roi Hayashi and teacher Doi. One day, Usutake ninjas arrive at the house of flamboyant hairdresser Yukitaka Saito and his son Takamaru, played by Takeshi Kaga and Takuya Mizoguchi, respectively. Yukitaka and Takamaru used to belong to the Uuetake clan, but Rantaro and his friends aim to save them by joining a contest that ends with a race to ring a bell on top of a mountain.

Last updated: February 24, 2026 at 14:04

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Plot questions answered

Ninja Kids!!! Plot Explained: Your Questions Answered

The questions people ask most about Ninja Kids!!! (2011): what happens in the confusing scenes, why the characters do what they do, the twists, hidden details and what the ending means. Each answer contains spoilers.

Q1

Why do Rantaro's parents send him to Ninja Academy?

Rantaro's parents send him to the Ninja Academy because they want him to become a proper ninja. Coming from a family of low-ranking ninjas, they see the six-year training program as an opportunity for Rantaro to gain legitimate skills and improve his family's standing in the ninja world.

  • rantaro
  • parents
  • ninja academy
  • training
  • motivation
Q2

Why do the Usutake ninjas attack Yukitaka and Takamaru?

The Usutake ninjas attack Yukitaka Saito and his son Takamaru because they formerly belonged to the Uuetake clan, a rival faction. The Usutake see them as enemies due to their previous allegiance and want to eliminate them.

  • usutake ninjas
  • attack
  • yukitaka
  • takamaru
  • uuetake clan
Q3

Why do Rantaro and his friends decide to join the contest?

Rantaro and his friends join the contest as a way to legally intervene and save Yukitaka and Takamaru from the Usutake ninjas. The contest provides them with a legitimate opportunity to reach the targets before the attackers do, since they cannot simply go against the ninjas without a formal reason.

  • rantaro
  • contest
  • save
  • yukitaka
  • takamaru
  • intervention
Q4

What is the significance of ringing the bell on the mountain?

The bell at the top of the mountain serves as the contest's final challenge and victory symbol. Ringing it marks the winner of the competition, and completing this race is what allows Rantaro and his friends to fulfill their goal of saving Yukitaka and Takamaru.

  • bell
  • mountain
  • race
  • contest
  • victory
  • win
Q5

Why is Yukitaka Saito, a hairdresser, targeted by ninjas?

Despite working as a flamboyant hairdresser, Yukitaka Saito and his son Takamaru have a hidden past as members of the Uuetake clan. This former affiliation makes them targets for the rival Usutake ninjas, regardless of Yukitaka's current civilian occupation.

  • yukitaka
  • hairdresser
  • uuetake clan
  • ninja past
  • target
Q6

Why do Rantaro and Shinbei stay with Kirimaru and Doi instead of going home?

Rantaro and Shinbei choose to stay with their friend Kirimaru and teacher Hansuke Doi during the summer rather than returning to Rantaro's family home. This decision brings them together with their mentor and strengthens their team dynamic, positioning them to respond when the Usutake attack occurs.

  • rantaro
  • shinbei
  • kiriamru
  • doi
  • summer
  • stay
Q7

What is the relationship between the Uuetake and Usutake clans?

The Uuetake and Usutake clans are rival ninja factions in the movie. Yukitaka and Takamaru previously belonged to the Uuetake clan, which makes them enemies of the Usutake ninjas who pursue and attack them.

  • uutake clan
  • usutake
  • rivalry
  • enemy
  • ninja factions
Q8

Why does Shina Yamamoto appear as both young and old?

Shina Yamamoto, who leads the Ninja Girl classes at the academy, is described as appearing either as a beautiful young woman or an older woman. This mysterious dual appearance adds an element of intrigue to her character, though the summary does not explain the reason for this.

  • shina yamamoto
  • appearance
  • young
  • old
  • mystery
Q9

Why does Rantaro's family being low-ranking ninjas matter?

Rantaro being born into a family of low-ranking ninjas establishes his starting point in the ninja hierarchy. This background motivates his parents to send him to the prestigious Ninja Academy run by Denzo Yamada, hoping he can gain skills and elevate the family's status.

  • rantaro family
  • low-ranking
  • ninja status
  • motivation
  • training
Q10

What role does Denzo Yamada's Ninja Academy play in the story?

Denzo Yamada runs the Ninja Academy where Rantaro trains for six years. The academy is the central setting for Rantaro's ninja education, introducing key mentors like Hansuke Doi and Shina Yamamoto, and it is where the summer adventure begins when students return home.

  • denzo yamada
  • ninja academy
  • training
  • school
  • setting

Movie threads

More Movies Like Ninja Kids!!!, by Mood & Story

Curated lists built around what makes Ninja Kids!!! tick: the same mood, the same kind of story or the same emotional payoff. Each list explains why these movies belong together.

Movies like Ninja Kids!!!: Young Ninjas in Training

Energetic kids mastering martial arts on a whimsical summer quest. Looking for more movies like Ninja Kids!!!? This collection features youthful martial arts adventures where kids embark on spirited quests to save their mentors, combining family-friendly action with themes of friendship and determination.

  • youthful
  • energetic
  • adventurous
  • teamwork
  • training
  • determined
  • Tone: light, adventurous, energetic
  • Pacing: fast, frenetic
Why these movies?

The story pattern: The narrative follows a group of young trainees whose peaceful learning environment is disrupted by an external threat. This forces the students to band together and embark on a race against time, using their unique but still-developing skills to overcome obstacles and achieve a symbolic victory that saves the day.

Why they belong together: Movies are grouped here because they share a core focus on young heroes in a specialized training setting, facing a challenge that tests their skills and camaraderie. The tone is consistently light and adventurous, blending action sequences with youthful humor and a clear, positive outcome.

Fast-Paced Summer Adventures like the race in Ninja Kids!!!

A frantic, high-energy race against rivals during a summer break. If you enjoyed the frantic mountain race in Ninja Kids!!!, you'll love these similar movies featuring kids and teens in high-energy summer contests. Discover more films with a fast pace, light tone, and themes of friendship and good-natured rivalry.

  • fast-paced
  • summer
  • race
  • youthful
  • adventurous
  • energetic
  • Tone: playful, determined, lighthearted
  • Pacing: fast, urgent
Why these movies?

The story pattern: The plot is driven by a single, urgent objective that must be completed within a short timeframe, often a single day or afternoon. The structure is a linear progression of challenges, where the heroes must work together and use their wits to outpace a rival group, leading to a climactic and triumphant finish.

Why they belong together: These movies are united by their core structure: a fast-paced race or contest set during a summer holiday. They blend medium-intensity action with a light, playful tone, creating an experience that is more about the energetic journey and youthful spirit than deep emotional stakes.

Every angle

Ninja Kids!!! (2011) Explained: Plot, Timeline & Characters

Everything about Ninja Kids!!! in one place: what happens in the plot summary, the timeline in chronological order, the characters and meaning and a spoiler-free summary. What's After the Movie adds the cast, box office and post-credit scenes.

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