A samurai named Kojirō embarks on a journey to Edo with his loyal spear-carrying servant, Gonpachi, and a young servant boy, Jiro. Along the way, they encounter a series of travelers who each bring their own stories and challenges, reflecting the diverse tapestry of Edo-period Japan. They meet an orphaned girl, a traveling musician, and a group of pilgrims, among others. Each encounter presents new facets of human nature and questions about loyalty, duty, and compassion. Amid these interactions, Gonpachi's sense of morality is contrasted sharply with Kojirō's rigid adherence to samurai code.

As their journey continues, the group is tested by various unforeseen events, providing opportunities to demonstrate bravery and kindness. The dynamics between the characters deepen, revealing hidden pasts and forging unexpected bonds. Moments of humor and tenderness intertwine with the harsher realities of their world. Tensions rise as the travelers face dangers that threaten their safety and integrity. The narrative weaves these individual stories into a broader commentary on social structures and personal honor, leading to an introspective and poignant culmination.