An actor named Kosuke plays the role of Iemon in a stage version of Yotsuya Kaiden and his new lover Miyuki plays Oiwa. However, as they delve deeper into their respective performances, the line between fantasy and reality becomes obscured until the murderous, vengeful themes of the play bleed into their own relationship.

Several hundred years after the Battle of Dannoura, the Genji and Heike clans face off again in a poor mountain town with a buried treasure legend. A revolver-wielding stranger, a lone gunman, burdened with emotional scars and blessed with incredible skill, drifts into town and crosses paths with two warring clans who are both on the hunt for a hidden treasure in a remote western town. Knowing his services are valuable to either side, he offers himself to the clan who will offer up the largest share of the wealth. Yoshitsune commands his Genji gang in white while Kiyomori leads his Heike gang in red. Expectations collide as the key players wonder which gang the gunman will join. Dirty tricks, betrayal, desire and finally, love, get jumbled together, as the situation erupts into a showdown.

Yuki is the last surviving royal of the House of Takemikazuchi or Takemikazuchi no Hime (たけみかずち　の　ひめ), who live in a futuristic post-apocalyptic isolationist world where they use their skills as former Mikado guards to become hired assassins. The wise old sage Kuka, who was once Yuki’s mother’s bodyguard, gives Yuki information that changes her life—and her destiny. She discovers that Byakurai has a dangerous connection to Yuki. After learning this information she chooses to leave the House of Takemikazuchi. She soon encounters Takashi, leader of the rebel movement, who offers Yuki a chance at revenge—and perhaps love. They soon discover similarities for they are both trying to escape the past to start new lives….