Returning to their lord's castle, samurai warriors Washizu (Toshirô Mifune) and Miki (Minoru Chiaki) are waylaid by a spirit who predicts their futures. When the first part of the spirit's prophecy comes true, Washizu's scheming wife, Asaji (Isuzu Yamada), presses him to speed up the rest of the spirit's prophecy by murdering his lord and usurping his place. Director Akira Kurosawa's resetting of William Shakespeare's Macbeth in feudal Japan is one of his most acclaimed films.