Risa has been fascinated by something since she was a child. It is a strange hill that can be seen from her house.She is so fascinated by the hill that she attempts to commune with the other world.Meanwhile, her older sister Kaori conspires with Risa's husband to poison her sister. Her husband, however, is riddled with guilt and tries to revive Risa...

Am I the one who's crazy, or is it the world?── Suzuka Sato, suffering from panic disorder due to daily stress, begins to hear eerie sounds one day. Exhausted and on the verge of madness from the worsening noise, she is saved by a religious group called "Voice of God." Through her unusual life with the cult members, Suzuka gradually regains her sanity. What true happiness will she ultimately find...?