Two boys, whose parents ply their trade by the mouth of a muddy river in Osaka, become close friends.

In a time of continuous civil wars ravaging the fields of feudal Japan, the eldest son of a very poor peasant family, living alongside the bridge over the Fuefuki river, decides to serve a warlord to escape his miserable condition, being soon followed by his younger brothers. Although not all the men of the family take this tragic path of death, women of the family will be doomed to endure the pain of loss during the next five generations.