Filmmaker Takashi Miike takes inspiration from Hideo Yamamoto's manga, Koroshiya 1, to tell this bloody and bleak tale about the Japanese yakuza. Blond-coiffed Kakihara's "mentor in crime" disappears, and Kakihara vows to find out who's responsible. He's also on the lookout for Ichi, a sadistic killer who may be able to inflict the level of pain Kakihara so badly craves.