The world-famous woodblock artist Hokusai (1760-1849), a widower in need of a steady income, lives with his daughter Oei in the house of his friend Bakin.
When his travels bring him to Osaka, Tora-san falls in love with a local geisha. He helps her to track down her estranged brother, and informs his family that he plans to marry her. His plans are foiled when the geisha informs Tora-san that she is engaged.
After a friend and business colleague dies, Tora-san visits the man's daughter, then takes her to Tokyo so she can study for a night school exam.
Tora-san helps out a runaway bride.
After a chance encounter with Hiroshi's father on a bus, Tora decides to get serious and reflect on the mortality of man. His plans are derailed when a beautiful lady starts working at Toraya.
Tora-san leaves Shibamata once again after an argument with his family and finds himself at an inn where he meets Tomekichi, a young man who looks up to Tora-san.
Tora-san becomes friends with Toraya's newest tenant, a pachinko-playing electrician that goes by the nickname Watt. Tora attempts to match Watt with a young waitress.
Tora-san befriends the descendant of a feudal lord. The man asks Tora to locate his deceased son's wife who resides somewhere in Tokyo.