Kyoto, 1999. One the eve of National Udon Day, a love octagon develops between a flatulent geisha, a sumo wrestler, a yakuza flautist, a deaf samurai, a pedantic ninja and three other Japanese stereotypes.

Drawing on old Super 8 footage, videotape, still photos, eyewitness accounts and police records, a former marine is able to piece together the final moments before his colonoscopy.