Antrum

The primary setting is a secluded forest near a remote campsite where siblings Oralee and Nathan perform their rituals. The film also features urban theater settings in Budapest, Hungary and California, where screenings take place, but the central narrative unfolds in the dark, isolated forest.

Antrum spans from 1983, when festival submissions and early screenings occurred, to 2018 when a copy resurfaces for a documentary. The story itself appears to be set in an earlier era as a lost 1970s film, while the surrounding documentary framework examines its cursed history across decades.

Antrum is framed as a cursed artifact whose public screenings are linked to death and misfortune. The film's history of rejections, fires, and fatalities builds a sense of malevolent fate, with the documentary suggesting the curse persists and feeds speculation about demonic influence.

The rituals performed by Oralee and Nathan blur lines between imagination and reality, with the film's imagery seemingly seeping into the real world. This tension between the documentary's scrutiny and the on-screen horrors challenges viewers to determine what is actually happening versus what is imagined.

The sketchbook grimoire and performed rites unleash infernal forces, with a demon named Astaroth woven throughout the imagery. The rituals are presented as both a protective attempt to save the dog's soul and a dangerous incantation that risks unleashing darker powers.

Oralee is the older sister played by Nicole Tompkins who stages and guides a series of occult rites to calm her traumatized brother Nathan and to retrieve their deceased dog Maxine's soul. She is driven by certainty but becomes increasingly unsettled as her spells seem to affect the real world.

Nathan is a sensitive, impressionable boy played by Rowan Smyth who is haunted by nightmares after Maxine's death. He experiences disturbing visions of demons and becomes drawn into Oralee's occult experiment, despite growing doubt about her guidance.

The main characters are Oralee and Nathan, siblings who venture into the forest to perform rituals for their dead dog Maxine. Their mother appears briefly, representing the ordinary world contrasted with the siblings' obsessive rituals. The film also includes a documentary framing that investigates the cursed film within the film.

Antrum is presented as a rumored lost film from the 1970s that is supposedly cursed. Viewers are cautioned to proceed with care. The film uses a documentary framework that investigates its dark history, blurring the line between fiction and a supposedly real cursed artifact.