Set during the last days of the Tokugawa (Edo) Period, Moeyo-ken tells the story of Hijikata Toshizo and the Shinsengumi. Hijikata Toshizo is a samurai eager to test his skills and sword and make his first kill. The dojo he belongs to practices the Tennen Rishin style and teaches this to farmers. Not considered real samurai by other dojo's, they receive a request for a duel by a rival dojo practicing the Kogen Itto style. Sohaku Rokusha, a teacher there, challenges them and fights with Hijikata Toshizo. The outcome of the fight creates a deadly animosity between them that lasts through the ages.
Fewer samurai films are being made, and the Uzumasa studio has fallen on hard times. One day, veteran "kirareyaku" (whose job it is to be felled with a sword by a film's star) actor Kamiyama is tasked with teaching sword action techniques to fledgling actress Satsuki. A few years later, the now-retired Kamiyama is visited by Satsuki, who has become a popular star.
1732, in the era of Yoshimune Tokugawa. West Japan suffers from a severe famine. Three years after wards, it appeared as though calm had been restored to the domain, but there is word that Jyuzo Matsumiya, the sword fighting instructor sent by the shogunate, is taking some suspicious actions.
