A meeting of two damaged introverts... Just when Alex seems settled into her old life - both alone and lonely, no matter what she says - a knock on the door plunges her back into a nightmare. Because Chloe Addison - a self-proclaimed oneironaut who has mastered lucid dreaming to such a degree that she can enter other people's dreams - is convinced that parasites she calls bugaboos hide in our nightmares, feeding on our fear, and Alex - as someone who lived in a dreamworld of her own creation for weeks - is therefore likely to be absolutely infested. Now, if Chloe can't convince Alex of the creatures' existence, it's only a matter of time before the shadow people find a way to slip into our world to spread their plague of insanity and death.