In 1879, Kenshin and his allies face their strongest enemy yet: his former brother-in-law Enishi Yukishiro and his minions, who've vowed their revenge.
Kanichiro Yoshimura is a samurai and family man who can no longer support his wife and children on the low pay he receives from his small-town clan. He is forced by his love for his family to leave for the city in search of higher pay to support them.
Raised suckling poison arrows among the sparring Iga ninja factions, Mumon is a carefree 16th-century mercenary. When the ninja council makes a power play to defeat the young Nobukatsu Oda struggling to step into his father’s warlord shoes as they expand rule across the country, Mumon jumps into the fray to satisfy his new bride Okuni’s demand that he make good on his promises of wealth. Yet Mumon soon finds what is worth fighting for beyond money or nation.
Benkei, a master fighter and killer, vows never to take another life after his conversion to Buddhism. His faith in pacifism, however, is shaken and ultimately broken by the attacks from a trio of fighters known only as the demons. Taking up his sword once more, he sets out to end their murderous terror.
After their lord is tricked into committing ritual suicide, forty-seven samurai warriors await the chance to avenge their master and reclaim their honor.