A crack dream team of researchers enters the subconscious of their sleeping patients in this sci-fi flavored drama. In the opener, neurophysiologist Nathan Bradford tries to help a former Air Force pilot interpret a recurring nightmare in which a shadowy figure pursues him over a forbidding landscape. The Morpheus Institute's Kate Russell and Steve Turner enter the pilot's dreamscape in an attempt to thwart the mysterious apparition—and to determine the meaning of ""Nevur,"" a cryptic message scrawled on a wall.
When the men of the small mining town of Forlorn begin slipping into unexplained comas, Nathan and his teem are called in to investigate. They quckly discover that a succubus--an erotic demon--is responsible, but will they find it in time to stop one of their own from becoming the next victim?
Kate becomes trapped inside the mind of a dying serial killer who still has a few tricks up his sleeve.
A troubled patient brings a dream of murder to the team, convinced that he has killed a woman he doesn't know. Kate (Watts) believes in his innocence while Nathan and the police are concerned. Joining his dreams where the murder occurs the team start to learn about the others players in the dream and are drawn into chasing the other people that appear in the dream.
Ben Costigan is having nightmares about his son being killed. While out for a walk, a woman on the grounds of a mental hospital comments that his son is going to die. Going into her dreams turns out to be difficult because she is schitzophrenic, but she predicts the murder of an insurance salesman so Ben starts taking her seriously. She shows the Sleepwalkers that the death of Ben's son is going to happen at a hospital, but can they find the right hospital in time?
A Stephen King like horror writer is having nightmares about being strangled by the monster out of his newest novel. The Sleepwalkers voyage into his dreams and find a copy of his newest manuscript with another man's name on it. Tracing it back, they try to find the man, but he committed suicide with an unfinished novel.. the very novel the horror writer is struggling with.