Alerted by Misao, Kenshin and the rest of the Peace Force arrive to help Aoshi find a mysterious killer. Kenshin's investigation uncovers evidence linking the killing to a Christian Samurai and of vengeance that's been foretold.

As Kaoru continues her training of Daigoro, Kenshin is warned to steer clear of the young man's teacher, Kaishu Katsu.

After their search leads them to the hidden cure, the leader of the Black Knights makes it clear that he has no intention of honoring his promise to cede control of Japan to the Sanada Ninjas.

The Water family's efforts to gain control of the Ki have left Kaoru seriously wounded.