Masutatsu Oyama is recruited by his former Army friend to work for a crew of gangsters, but when they kill both his girlfriend and his best friend, Oyama flees away to a small town where he both learns lessons in martial arts philosophy from a wandering master and helps a young boy take on a challenge to fight a ferocious captured bear to win money for the boy's injured father.

Sonny Chiba plays Kyokushin Karate founder Masutatsu Oyama, who unexpectedly arrives at a karate tournament in rags, but wins the tournament. After turning down the chance to fight at future tournaments he returns to his simple village life. He reluctantly returns to karate for a final showdown against the students of a rival school.

Sakata protects a little boy while coping with rival gangs.

The last of the Masutatsu Oyama trilogy. Oyama takes a job as a professional wrestler in Okinawa, but when he discovers that he is expected to take a dive, he quits in disgust. However, when a friend finds herself in desperate need of medical supplies, Oyama steps back in the ring to raise the money—but will he be able to follow the script this time?

When Koryu's childhood friend Shurei is abducted by gangsters, the desperate young woman recruits a female martial artist and a tough-as-nails stranger to join her for a dangerous rescue mission.

Koryu heads to Yokohama in search of a woman named Birei, kidnapped by diamond smugglers who move their hot rocks by surgically implanting them into the nubile buttocks of Chinese prostitutes. Koryu's older sister, working as a jewelry designer, is secretly, if unhappily, involved with the gangsters.

Akira Inugami is the only survivor of a clan of ancient werewolves who relies on his supernatural powers to solve mysterious crimes. After a series of bloody killings perpetrated by an unseen force, Inugami uncovers a conspiracy involving a murdered cabaret singer, corrupt politicians, and a plot by the J-CIA to harvest his blood in order to steal his lycanthropic powers.