Kyle, a telepath, jumps into a woman's mind controlling her sexual experiences. He encounters a malevolent entity masquerading as human. It pursues him to his apartment where a victim seeks revenge.

Kyle Malone is a lascivious telepath who has made a pastime out of finding a crowd, selecting female victims, and hopping from one woman's mind to the next, sifting through their memories and seeking out their past sexual encounters and reliving them, taking over the role of their lovers. But one day Kyle jumps into the mind of something that looks like a woman but is not quite human. A dark mind, festering with thoughts of horrific, unspeakable things. The female fiend then follows Kyle to the tenement residence he calls home - the Twist Steel apartments - where Heather, one of his previous victims, has broken in and waits in the dark with revenge on her mind. But with the "subhuman" woman now laying siege to the apartment, Heather and Kyle must team up - along with the other unfortunate residents of the building - and their survival hinges on a reality-blending game of cat-and-mouse with the ageless, evil woman-thing...the SUBHUMAN.