Airi Clements always had nightmares that caused her grief. It seemed as though it's her other reality. However when she meets a strange girl, Olivia, her dreams seems to get... dangerous. Aito, her friend said he'll help her but is that his true motive? Olivia wants to help but will it drive everything apart? Will she find out what is happening to her and unravel her stained past? Or will she be sucked in The Zone of Spirals with her distorted memories? Remember, 'when you knock knock knock on the door of doom. Spiral your way down with a face of gloom'