Allison Kramer suffers recurring nightmares and selective amnesia, returning to camp to discover the truth as the secrets of infamous killer Angela Baker are revealed. [Production for this sequel to 'Sleepaway Camp III' (1989) was shut down after Double Helix Films went bankrupt in 1992, though the film was officially completed using archive footage and released on-demand beginning in 2012.]

Angela Baker escapes from a mental hospital and surfaces at a summer camp as a counselor who lectures her teenage charges on proper moral behavior. Those teens who break her strict rules -- from the camp chatterbox or a sex-obsessed girl to the boys who are peeping Toms -- are murdered by the impostor in various gruesome ways. As more campers go missing, intrepid counselor Molly begins to piece together the truth.