With the object of discovering the male accomplice of Hideko, a bad girl, Michiko, a police-woman, disguises herself and infiltrates a gang. Then in a reformatory, under the name of Suzuko, she finds a certain girl who is familiar with Hideko and from her she approaches a woman, named Keiko. One day, at a beer-hall, the police-woman meets Keiko who just finished a secret narcotics transaction and asks her about Hideko. However, with the sudden appearance of Saburo, one of the gang, her search fails, and an exciting pursuit begins. Later Keiko is found dead.

After the massacre of Christians at Shimabara, followers of Amakusa Shiro band together in a plot to overthrow the shogunate in order to exact revenge on the Tokugawa. At the same time there is a succession dispute in the Kuroda clan, as one faction tried to usurp the rightful heir and take over the honored clan. Before his untimely death, the lord of the Kuroda bestowed “Nihongo”, a magnificent spear, on his finest warrior, which ultimately brings him into contact with two of Japan’s most famous historical figures, Yagyu Jubei and Miyamoto Musashi. Can the three masters of martial art join forces to defeat their enemies and save the nation?

In 1941, overpopulated Japan faces an economic boycott and its armed forces push further to the south. And despite negotiations between Japan and the U. S. A. war is declared with the attack on Pearl Harbour. Victories follow for Japan on land and sea and her forces push forward to the borders of India. But gradually the tide turns in favour of the Allies and after the atom bombings of Hiroshima and Nagasaki, Japan is compelled to accept the Potsdam Declaration and by the order of the Emperor agrees to unconditional surrender. Under the supervision of the occupation forces the International Military Tribunal opens in Tokyo to try the Japanese war leaders. Established in the cause of justice, and to prevent future aggressive wars the trials drag on for two and a half years. And on December 23, 1948, General Tojo and six other war leaders mount the thirteen steps to the gallows at Tokyo's Sugamo prison.