BURIAL GROUND: THE NIGHTS OF TERROR

Professor Ayers (Benito Barbieri) is studying an ancient crypt near a grand mansion he owns and accidentally unleashes an evil curse. The curse reanimates the dead buried in the area and the zombies devour the professor. Three jet-set couples Mark (Gianluigi Chirizzi) and Janet (Karin Well), James (Simone Mattioli) and Leslie (Antonella Antinori), George (Roberto Caporali) and Evelyn (Mariangela Giordano), who also have their son Michael (Pietro Barzocchini) with them, arrive at the mansion as they were invited by the professor.

Rotting corpses suddenly rise from graves all over the property and attack the guests. The power in the mansion begins acting strangely, going on and off, before it breaks all the light bulbs and stops working. George is killed in front of his wife and son when he tries to shoot the zombies. Evelyn manages to burn some of the zombies, giving her and Michael a chance to run. Janet is injured by a bear trap, but she is freed by Mark with the help of James and Leslie, who also kill some zombies who were getting close. Then the group meet up with Evelyn and Michael back at the mansion where they lock themselves up.

While everyone is boarding up windows and doors around the mansion, a maid Kathryn (Anna Valente) goes to check one of the windows upstairs. Zombies throw a large nail at her, which pins her hand to the side of the wall, then they decapitate her with a scythe. The zombies begin trying to find ways into the mansion as night falls. They start to display unusually high levels of intelligence, like using tools, axes, giant logs to slowly break through the doors and even climbing the pillars of the mansion to get up on the balconies. Leslie goes off alone to find bandages for her friend's injured leg. As she walks by a window, a zombie suddenly bursts through, grabbing her by the hair. She is impaled in the head with the shard of glass.

Zombies finally break into the mansion and attack everyone. Mark, James and a butler Nicholas (Claudio Zucchet) defend Janet who was being attacked. Meanwhile, Michael has become traumatized and Evelyn tries comforting him in another room. Michael however, starts showing he is sexually attracted to his mother and fondles her breasts while kissing her. A shocked Evelyn slaps him and he runs off. Michael soon encounters the zombified Leslie who attacks him. Evelyn finds him dead with Leslie eating him and she has a mental breakdown, which she retaliates by smashing Leslie's head.

The group decide to let the zombies inside the house, reasoning that they can distract them while they escape. Nicholas is killed by the zombified professor, while the other remaining survivors escape from the mansion and hide out in an unused building on the property until morning. They find a nearby monastery, but discover that all the monks have become zombies. James is ambushed by zombies and killed, then turns into a zombie when the others leave.

The zombie monks chase the rest of the survivors to a workshop in the middle of the forest, where they encounter the zombified Michael. Evelyn offers Michael to suckle at her breast and he bites off her nipple, killing her. Mark and Janet are cornered by the zombies just as a zombified George and James show up. The zombies grab Mark and during the struggle they turn on an electric saw to kill him with it. Janet screams in terror as the zombies get closer to her and they put their hands on her. The misspelled "Profecy of the Black Spider" then appears on the screen ("The Earth shall tremble, graves shall open...they shall come among the living as messengers of death, and there shall be the nights (sic) of terror") as the film ends.

The surviving guests attempt to escape the mansion, only to find that the nearby monastery is overrun by zombie monks, leaving no survivors and the evil prevailing.

Burial Ground: The Nights of Terror ends on a note of utter doom, with the zombie infestation spreading unchecked and consuming all who cross its path. The film’s refusal to offer hope or survival cements its status as a nihilistic entry in the zombie genre, emphasizing the futility of resistance and the relentless hunger of the undead.