Set in 1932, amid the rise of militarism after the establishment of the Manchukuo colony in Northeast China, the story centers on a trio of karateka. Studying under their aging master in a small dojo in the woods of central Kyushu, Choei, Taikan and Giryu face a company of kempeitai military police come to requisition their dojo for use as a military base.

High schooler Kei Tsuchiya joins The Destroyers when she decides that her longtime karate master is holding her back. She realizes her mistake but it's too late.

In Okinawa, Ayaka Kurenai was born in the world’s greatest legendary Karate family. When she was a child, her family was attacked by a mysterious gang that seeks legendary black belt. Her father Soujiro Kurenai was killed and her younger sister was taken in front of her. Time has passed. In Yokohama, she was spending her life as a normal high school girl, hiding her real name and her status as a heir of the legendary Karate family. However, one incident brought her a fateful encounter with her sister who was separated in their childhood. But, her sister was raised as a heartless killing machine by the mysterious gang who took her. .

Ninjas are enduring, iconic figures of Japan. They were active about 500 years ago during the country's Warring States period. And these days, they're thought to be long gone. But centuries later, one ninja is still with us. 84-year-old Masaaki Hatsumi is a successor of the Togakure school. He teaches a supreme form of self-defense to more than 100,000 students around the world, including FBI agents and army personnel. Hatsumi can easily fend off attacks from these tough disciples and make them unmovable using just one finger. What is the essence of his astonishing art? This program investigates the hidden power of this ninja master.