The film stars Seishiro Kato as Rantaro who is sent to a ninja training school by his parents. During the summer, their teacher is invaded by a group of rival ninjas culminating in a race to ring a bell on top of a mountain.
- Genre: Action, Drama, Family
- Studio: Yahoo! Japan, Amuse Soft Entertainment, movic, NHK, Sedic International, Warner Bros. Pictures, dentsu, OLM, The Asahi Shimbun, King Records, Raku Film
- Keyword: ninja, ninjas
- Cast: Seishirou Katou, Roi Hayashi, Susumu Terajima, Mikijiro Hira, Takahiro Miura, Arata Furuta