Adaptation of Mito Kōmon.

Early film by Kenji Misumi.

A scientist successfully creates an invisibility serum, only to be kidnapped by a gang of thugs who wish to use the formula to rob a priceless jewel.

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.