A blind Vietnam vet, trained as a swordfighter, comes to America and helps to rescue the son of a fellow soldier.
In 1939, Sakura Nishi is a young army nurse who is sent to the field hospitals in China during the Sino-Japanese war. She has to assist the surgeon Dr. Okabe with an incredible number of amputations. In the crowded wards, she gives sympathy to some of the soldiers, including sexually servicing one who has lost both arms and has no hope of returning home. She falls in love with Dr. Okabe, and follows him to the front, even though he is impotent from his morphine addiction.
Zatoichi comes upon the town of Tonda, overrun by gangsters. Using one of his favorite techniques, Zatoichi proceeds to win 8 ryo in a rigged gambling game. Of course, the local gangsters attempt to kill him, and the adventure begins. It turns out a blacksmith named Senzo examines Zatoichi's cane sword, and discovers it to be forged by his old mentor. Senzo discovers the sword is at the end of its usefulness and will break when it is used next.
