At Shizumoto, a geisha shop not far from Ginza, a group of geisha are going about their day, putting up a modest resistance to the tragedies of life. The proprietress, Ikuyo, is a ridiculously good-natured woman who gives money to a poor but brilliant young man, Eisaku Yanoguchi, to attend college on the condition that he will take care of her in the future.

Attracted by the report of the development of a new type of rocket fuel, the vicious dictator of Krangkor, the dark planet, descends on Earth to steal the formula from its creator, the benevolent Dr. Makin.