Esta película trata de cómo Morihei Ueshiba desarrolló el aikido aprendiendo diferentes artes marciales, y de algunas de las cosas que le fueron sucediendo a lo largo de su vida para llegar a crear este arte marcial.
Sonny Chiba es Takuma Tsurugi, un mercenario experto en artes marciales que es contratado por un grupo de yakuzas para secuestrar a la hija de un millonario fallecido, la cual ha heredado toda la fortuna de su padre. Pero cuando los yakuzas se niegan a pagarle lo prometido. Takuma decidirá proteger a la niña y enfrentarse a los temibles yakuza.
The Kanto Gypsies, a tough girl gang, hide out from the law in the middle of a disputed gang territory, where they end up getting kidnapped by sinister underworld thugs. After breaking free, the girls set their sights on one thing: revenge. Miki Sugimoto stars as girl boss Komasa, the ruthless and sadistic leader of the Kanto Gypsies who possesses more than enough brains to match her killer looks.
From the opening theme song to the grand finale, you know that you have found something special as this exciting movie stars the great Misora Hibari in one of her most memorable performances as she plays Shintaro and Oharu, a brother and sister, the children of a lumber dealer who had been murdered by the evil boss Kumagoro who plots to take over Shintaro's family business with the help of a corrupt deputy who has fooled the family into believing that he is on their side.