Nio confronts Seto about the men who attack him and Hajime, and he won't rest until he gets the truth. What drives the young merchant? And can the Miburo stop their first official targets before the assassins claim a fifth victim?

The Miburo celebrate their new status with the ultimate test of strength: a drinking competition. While inebriated swordsmen drop like flies, Serizawa confronts Hijikata with a question that shakes Nio's confidence.