Kay (Sarah Kendall) is a painter who has been experiencing terrifying nightmares of being chased by a mysterious, bloodthirsty creature. The imagery is starting to invade her work and affect her nerves, so a getaway is planned for her to get some relaxation in before a big gallery show. She flies to a dark and stormy island with her husband, David (Alan McRae); her brother, Eric (Frederick Flynn); and his wife, Brooke (Carol Kottenbrook). Though she has never visited it before, Kay recognizes their rented beach house from one of her nightmares and expresses her unease, but everyone dismisses this as the result of her art getting too surreal. After Kay dreams of finding David's disembodied head in bed with her, he disappears and is later found mangled and hanging from the roof of an old barn. Kay refuses to sleep, sure that to do so will mean more deaths, but Eric sedates her secretly, worried about her sanity. He is certain that the culprit is Marsh (Michael Holmes), the pilot who flew them to the island, though Brooke is inclined to believe Kay's supernatural explanation. More mayhem ensues while Kay slumbers, and when she awakes alone, she is intent to stay conscious and avoid facing the slayer herself.