A drama set in 894 A.D., Kai Doh Maru is an eerie mixture of history and supernatural fantasy. After her uncle usurped the family domain, Princess Kintoki was raised as a boy-warrior under the tutelage of the elegant Lord Raiko and the other stalwart Knights of Kyo. Pitted against the Knights is the Oheyama gang, led by the icy Princess Ohni and her crazed assassin Ibaragi. Ohni retains her childhood love for Kintoki, apparently unaware of her gender.