Trapped in a hidden realm of yokai monsters and spirits, Risako Kitamura and Yasuo Mizutani seek five magatama left behind by a powerful onmyoji mage. Will they be able to reverse their body-swap curse, and will they be able to free the imprisoned yokai?

During their last summer vacation of high school, Risako Kitamura and Yasuo Mizutani go to an old Japanese-style mansion up in the mountains, each there for a separate reason. They discover the place is cursed, home to a hidden world of yokai monsters and spirits!