NIGHT OF THE DEMONS

Teenage outcast Angela Franklin and her best friend Suzanne are throwing a party at Hull House, a mortuary abandoned due to its gruesome past and rumored to be cursed by evil spirits. On the way there, Stooge, Helen and Rodger drive past an elderly man who is carrying apples and razor blades. When Stooge taunts him by showing his buttocks out of the passenger window, the elderly man curses at them and says that "they'll get what they deserve".

Judy Cassidy and her boyfriend Jay Jansen pick up their friends, Max and Frannie, for the party. When they arrive, Judy's ex-boyfriend Sal Romero crashes the party. They start the party by dancing, but the radio dies out. Angela then holds a séance as a party game, but Helen screams when she sees a demon in the mirror foreshadowing her demise; and the mirror falls to the ground in pieces. The group suddenly hears thuds below them, and the demon frees itself from the crematorium it was sealed in to possess a distracted Suzanne. The group searches around the house, and the possessed Suzanne forcefully kisses Angela for the demon to manifest in her too.

When Judy discovers that Jay only invited her to have sex, he abandons her in a room only for her to be apparently locked in. Rodger and Helen find no exit outside, but as Helen disappears and the demons call out Rodger's name he locks himself in the car. Stooge wanders with Suzanne to find a bathroom and he gets locked outside, where her face transforms and she smashes a mirror before disappearing. A confused Stooge finds Angela seductively dancing in front of the fireplace and begins to dance with her, but when they kiss she possesses him as she bites off his tongue. Meanwhile, Jay wanders off to find Suzanne, with whom he has sex. During this, she reveals her inner demonic appearance to him and gouges his eyes. The possessed Stooge finds Max and Frannie having sex in a coffin and murders them both.

As Sal becomes horrified when he sees Angela putting her hands in the fire, Rodger (who had fallen asleep) is awoken from Helen's body crashing on the car. The two manage to free Judy, but are split up when the now openly demonic Angela chases after them. Hiding from Angela, Sal and Judy discover Suzanne with Jay's body before Sal is thrown out of a window. Judy escapes and she evades the demons throughout the house. When she attempts to climb down and Angela tries to kill her, Sal reemerges to fight her off and they both fall off the roof; with Sal impaled on a spike. Judy and Rodger are chased by the demons, and they lock themselves in the crematorium where they discover the truth of the demonic force. Just as Angela and Stooge break down the door, she uses a pipe funneling gas and ignites it to torch them which drives them away.

They escape upstairs and are cornered by the demons, including a burnt Angela and Stooge, and the demon possessed undead bodies of Suzanne, Jay, Max, Frannie, Helen and Sal. Rodger smashes through a window that leads them outside and they begin to climb up a wall by grabbing on the barbed wire around it, but the demons try to drag down Judy by her ankles. Rodger successfully pulls Judy up and they escape over the wall as the sun rises to destroy the possessed corpses and banish the demons back to hell. A severely shaken Judy and Rodger walk home together and they pass by the elderly man who watches them with contempt. He then enters his home to eat one of his wife's homemade pies for breakfast, only to realize too late she used the apples that he placed the razor blades in which he intended to use on Trick-or-Treaters. The blades graphically slice through his throat, killing him; his wife then casually approaches his dead body to kiss his head, saying "Happy Halloween, dear."

Judy and Rodger survive the night by fighting off the possessed and escaping Hull House after confronting the demonic forces.

The climax underscores the relentless nature of the supernatural threat, with the survivors relying on quick thinking and resourcefulness to endure. The conclusion offers a mix of relief and ambiguity, as the ordeal leaves the characters physically and emotionally scarred, while the evil lurking in Hull House remains a chilling possibility.