A woman, Tome, is born to a lower class family in Japan in 1918. The title refers to an insect, repeating its mistakes, as in an infinite circle. Imamura, with this metaphor, introduces the life of Tome, who keeps trying to change her poor life.

Joe, Okita, and Serizawa hear of the armed robbery of a truck carrying one billion eighty million yen's worth of Mint paper. Knowing that the thugs will now need a counterfeiter to make the bogus bills, they each decide to cash in on it by selling them the idea that they need Sakamoto, the best counterfeiter in Japan. A seesaw game unfolds between the three men as each tries to outdo the other two in handing over Sakamoto for one million yen to Hijikata, the big boss, who intends to make counterfeit money with the stolen paper. A little belatedly, they realize it needs their combined forces to outwit Hijikata and they raid his place together. Outnumbered, however, they are thrown into a basement room and the gas is turned on. Certain death stares them in the face, but the three men are not ones to take things lying down....

Sachiko is the 17-year old daughter of radiotherapist Professor Oshima. After exposure to radiation in the hospital, she develops leukemia. As if that was not enough trouble for one lifetime, discovers that Oshima is not her real father, and that her boyfriend is really her half brother.

A simple Chinese immigrant wages a perilous war against one of the most powerful criminal organizations on the planet.