In the early 1200s, Dogen brought Chinese Zen philosophy to Japan, and established the Japanese Zen school of Buddhism. He taught that a person was capable of realizing Buddhahood within himself, by way of Zazen. Zazen is extended hours of sitting and meditating to achieve a state of “Mu” (nothingness, or empty existence).

Young Kinu Yamabe is drawn to low-born Onimaru, who is vital and charismatic, but viewed by his father as a demon. After her first period, Kinu suffers the fate of any women born near the Sacred Mountain: she must leave the Mountain and serve as a priestess.