While her son, Kichi, is away at war, a woman and her daughter-in-law survive by killing samurai who stray into their swamp, then selling whatever valuables they find. Both are devastated when they learn that Kichi has died, but his wife soon begins an affair with a neighbor who survived the war, Hachi. The mother disapproves and, when she can't steal Hachi for herself, tries to scare her daughter-in-law with a mysterious mask from a dead samurai.
In the Sengoku period, a woman and her daughter are raped and murdered by soldiers during a time of civil war. Afterwards, a series of samurai returning from the war through that area are found mysteriously dead with their throats torn out. The governor calls in a wild and fierce young hero to quell what is evidently an Onryō ghost. He encounters the two beautiful women in an eerie, beautiful scene. After spiritual purification, he meets the demon in a thrilling fight.
A family of four are the sole inhabitants of a small island, where they struggle each day to irrigate their crops.
