In 16th century Japan, peasants Genjuro and Tobei sell their earthenware pots to a group of soldiers in a nearby village, in defiance of a local sage's warning against seeking to profit from warfare. Genjuro's pursuit of both riches and the mysterious Lady Wakasa, as well as Tobei's desire to become a samurai, run the risk of destroying both themselves and their wives, Miyagi and Ohama.
Jewel thieves become interested in an invisibility formula invented by Professor Nakazato and want to use his invention to acquire a diamond necklace called the "Tears of Amour."
After arriving in the town of Shimonita, Ichi finds that a price has been put on his head by a local yakuza boss. He's drawn into a trap, but after hearing of the slaying of a former love, Ichi furiously fights his way through the entire clan to face the killer, a hired ronin.
