Immigrant gangs terrorize a Japanese town with their threats, loud jazz, and tasteless fashion sense, and only the tough but suave Dr. Amamiya (Ando) can stop them, as long as he gets rid of his silly peace-loving ideals.

Rick, a down-and-out American boxer, is hired to transport a sword to Japan, unaware that the whole thing is a set up in a bitter blood-feud between two brothers, one who follows the traditional path of the samurai and the other a businessman. At the behest of the businessman, Rick undertakes samurai training from the other brother, but joins his cause. He also becomes romantically involved with the samurai's daughter.

In Osaka during the Edo period, ruler Sanada Yukimura was in losing position, fearing Toyotomi's blood descendents would end, he impregnates one of five Shinano female ninja with the seed of Toyotomi Hideyoshi in hopes of continuing the bloodline. Princess Sen and the five female ninja escape from Osaka castle by blending in with the handmaidens. Lord Tokugawa Ieyasu who was supposed to rule all under the heavens was informed of this secret. So Ieyasu orders five samurai of the Iga Ninja clan (brought by Hattori Hanzo) to stop the Toyotomi bloodline by killing the Kunoichi ninja. An attack of ninja magic arts unfolds in a battle of the sexes.

Two escaped criminals who kidnapped a baby break into the house of Misawa, a man who works in an advertising agency and lives quietly with his family. They will force him to collect the child's ransom for them.

Arriving in the town of Hakodate, a wandering musician, Shinji Taki, is soon recruited by the local gang as a hired hand. However, with the arrival of a sinister gunman, Taki's mysterious past catches up with him.

Bakyo is a talented but unsuccessful rakugo artist. The very successful Rokyu wants to take Bakyo under his wings, but Bakyo refuses, claiming that Rokyu's rakugo is compromised by the elements of kabuki. But Bakyo changes his mind and determines to learn (or steal) Rokyu's craft and makes it his own.