In a small town on the countryside, every young boy is forced to have the same bowl-head haircut known as the "Yoshino-gari" hairstyle. Then one day, a drastic change occurs when a transfer student with bleached hair comes from Tokyo.

In 1897, actor, director, producer and theatre company leader Kawakami Otojiro set off on a tour of the USA with his wife Sadayakko and theatre company members, but in a foreign country where he could not speak the language, he had to struggle against a succession of adversities, including lawyers absconding with the proceeds and actors going on strike. One day, however, Otojiro arrives in Boston on his arduous tour and sees a packed house for a performance of The Merchant of Venice by the famous British actor Henry Irving. In just one night of rehearsals, they concoct a Japanese version of The Merchant of Venice, and perform the play to a foreign audience with bullshit dialogue and a reckless performance that can be cut short by "Sucharaka poko poko" when they get stuck on a word.

Kanzo Hattori, an apprentice Ninja, leaves his home town of Iga for his final training. He must go to the city of Edo (Tokyo), and the first person he meets shall be his master, whom he must protect with his life, whilst upholding the ninja code. Also while in Edo, Hattori must find out why their rivals, the Koga Ninjas, are flourishing while the Iga Ninjas are dying out. Hattori's master is Kenichi, a 9 year old boy. Kenichi is an introvert and not very popular boy, so he never plays with the other children from school. Kenichi also has a secret crush on a young lady called Midori, yet he's too shy to speak to her. Though as he watches Hattori trying his best, he too begins to try. Meanwhile, people are being found unconscious, their bodies completely unmarked. All the victims have a tattoo (the Koga Ninja crest) and are found with a throwing knife lying close by.

A hustler who gets in trouble with a gang boss in the port town of Sukago agrees to make good with the don by putting him in contact with a mysterious hitman — an assassin the hustler has no idea how to contact. Instead, he hires an actor to play the role, though the thespian has no idea what he's getting into.