The series follows the adventures of Sabu, a young Edo bakufu investigator traveling with the blind master swordsman Ichi. In their travels, they assist the common people in solving mysteries and righting wrongs (usually committed by bandits or corrupt officials). Sabu is engaged to Midori, the daughter of his boss, who works as a police officer for the Tokugawa shogunate.

江户时代在浅草担任捕快、使用十手为武器的佐武和擅长居合拔刀斩的盲人市是一对搭档。两人为了维护江户的和平，向一系列麻烦的事件发起挑战。