A blind swordsman and a young cop moving through Edo solving problems nobody else can touch, Ichi's the real power, Sabu just has to keep up. The series builds something rare for 1968: a partnership where the disabled character isn't a gimmick, he's the reason the show works. Fifty-two episodes of two men fixing what the system breaks, one village at a time.

Sabu works as a young investigator for the shogunate in Edo-era Japan, and he travels alongside Ichi, a blind man who is a master of the sword. On their journeys the two help ordinary people solve mysteries and set wrongs right, often against bandits or corrupt officials. Sabu is engaged to Midori, the daughter of his boss, a police officer serving the Tokugawa government. The show is a historical action adventure with dramatic stakes, built around a detective and a swordsman working together.