The 47 Ronin

In the early 18th-century, Lord Takumi-no-kami Asano, feuding with Lord Kira, tries to kill his opponent in the corridors of the Shogun's palace. The Shogun sentences Asano to seppuku and deprives the palace and lands from his clan, but does not punish Kira. Asano's vassals leave the land and his samurais become ronin