Hattori a ninja boy who has come from the Iga mountains is now a part of the Mitsuba family along with his brother Shinzo and his ninja dog. Hattori helps Kenichi with his problems and constantly keeps an eye on him as a good friend.
A Junior artist living in a tinsel town, who is yet to taste success after a struggle of 30 years of acting career, gets the shock of his life when a prolific filmmaker, offers him a lead role in his next film.
Emma Brown Garett,
Kenichi,Hattori starts attending school undercover,occasionally accompanied by his brother,Shinzo,Shishimaru the ninja dog and Kenichi's girlfriend, Yumeko. The gang is also threatened by the rival Koga ninja and his evil Shadow-cat.