The Loyal 47 Ronin

The Loyal 47 Ronin tells the true tale of a group of samurai who became rōnin (leaderless samurai) after their daimyō (feudal lord) Asano Naganori was compelled to commit seppuku (ritual suicide) for assaulting a court official, Kira Yoshinaka, who had insulted him. After carefully planning for over a year, they execute a daring assault on their sworn enemy's estate, and exact their revenge, knowing that they themselves would be forced to share their Lord's fate to atone for their crime.