Set in 1857 the movie is about
Gennosuke who is a samurai who was tricked in to assassinating a counselor of his clan. He was made to think that what he was doing was going to be good for the clan and would lead to his own advancement. Instead, he was abandoned and then pursued.
Gennosuke is given refuge by a poor farmer. he finds another samurai being taking advantage of by his clan, and decides he is not going to let it happen again.
When Gennosuke is too late to save the samurai and his wife, he takes revenge on their killers.