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.]

On the darkest night of the year, when Satan is allowed free reign to walk the earth, a motley crew of Satanists kidnap a sharp tongued southern waitress to be a given up as the Dark One's bride and mortal host of the antichrist. But when her rowdy redneck friends botch up the ritual in a violent rescue attempt, all power of hell is inadvertently transferred into the most unlikely of hosts: a sacrificed chicken! Now, the Satanists and Rednecks battle one another as an evil most fowl threatens to swallow their souls and transform them into a demonic army of the walking dead! Who will survive the terror of Zombeak!?

Psychotic Angela is itching to do what she does best: slaughter dozens of teenage campers. As luck would have it, the previous site of her murders has been renamed and converted into an experimental summer camp meant to bring together privileged and lower-class teens. On the day the youths are boarding the buses to camp, Angela runs over a potential camper with a garbage truck and assumes her identity. Once she has infiltrated the camp, the real terror begins.