Rei, the heroine of the story, has lost her fiance in a terrible car accident. She is now haunted in her dreams of the truth to why her boyfriend's life was taken so tragically...Her dreams take her to an altered state of reality, called the "House of Sleep". It is here that she encounters the most hideously tortured souls who are being overtaken by a curse and a deadly tattoo, and also where she learns the most about truth, life...and death.