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.
Kiroku boards with a Roman Catholic family and falls for the daughter Michiko. He ignores his feelings, joins a gang, gets in fights and, eventually, becomes involved with the radical Kita Ikki group.
Though his parents help him run the family business, Jun still feels persecuted by their love; when they bar him from meeting with his girlfriend, tensions increase.
