DevelopedbyscientistsHarryandMeg,the"Quadrant"helmetallowsyourmindtotransportyouintoaworldwhereallyourphobiasandnightmaresarereal,whilealsograntingyouthestrengthtodefeatthem,liberatingyoufromtheircontrolforever.ButtheQuadrantexperimentisabouttogohorriblywrong.WhenErin,ayounggirlwho’sobsessedwithJacktheRipperusesthedevicetoactuallyBECOMEtheRipper,sheunleashesareignofterror,firstinhermindinanAIversionofoldLondoncreatedbytheQuadrant,andtheninreality,whereshenowstalksthecontemporarycitystreets,seekingoutvictimsforherblade.TheonlywaytostopthissavagenewRipperisforanevenmoreviciouskillertoentertheartificialQudrant-verseandbringherdown.Whatensuesisabrutal,bloodybattle,murdereragainstmurderer,bothinthisworldandthesurreal,dangerous,syntheticworldofQuadrant.