In a mountainous region of Japan, Lord Arakawa kidnaps the men of nearby villages to use as slave labor, producing gunpowder from his sulfur pits. A band of young boys decide to rescue their enslaved fathers on their own.
At the end of the Edo period in Kyoto, the ronin Kurayoshi Norizen rents the second floor of a hardware store and lives a carefree life, running a temple school. However, his true identity is Kurama Tengu, who appears to help a patriot in a difficult situation when he is attacked by the Shinsengumi, and then disappears like smoke.
The film is set in Kyoto at the end of the Tokugawa period, when there is a fierce clash between the supporters of the Emperor, who are fighting for the overthrow of the Shogunate, and the Shinsengumi squad, who are chasing them. Suddenly, a mysterious masked warrior appears, on a white horse he is called Tengu from Mount Kurama and he opposes the Shinsengumi.