An early ninkyo film from before the genre had truly established its form. Koji Tsuruta plays an honourable outlaw who saves an older man from an ambush. It turns out the man is the head of a hard working clan appointed to a railway construction project. A ruthless yakuza gang is also trying to get their share of the project and attempts to sabotage the work. After the old man dies, his son (Sonny Chiba) and daughter (Junko Fuji) try to complete the project. Tsuruta joins them while also falling in love with a local woman working in a bar (after all, Tsuruta always was more of a lover than his stoic colleague Takakura).
Matsugoro is a poor rickshaw driver whose animated spirit and optimistic demeanor make him a favorite of the town. Matsu helps an injured boy, Toshio, and is hired by the boy's parents.
Set in wartime at the Yawata Steel Works in Tobata, Yawata, and Kokura cities in Fukuoka Prefecture, the film depicts people taking on the evil blast furnaces that prevent increased production. The film was shot on location at the actual Yawata Steel Works for an extended period of time, and special effects were created using a miniature blast furnace that closely reproduces the actual one.
