Silvia Hacherman, [Mimsy Farmer], is a successful manager at a chemical laboratory in Rome. Accompanied by her boyfriend, Roberto, [Maurizio Bonuglia], she visits Afro-Italian friends, including Andy, [Jho Jhenkins], a university professor who speaks frankly about Africa’s traditions of witchcraft, black magic, and human sacrifice. He also reveals that even in his country there are cults that pick off unknowing victims, driving them to madness before they die. Soon after this unsettling conversation, Silvia begins to experience a troubling flood of visions and repressed memories that blur the line between memory and perception. She sees her mother, Marta, [Renata Zamengo], sitting in a chair and applying perfume in a black dress, and she recalls a horrifying scene in which Marta is attacked by a man who is not Silvia’s father, a man who disappeared into the navy and died at sea. Marta’s death is described as a possible balcony fall when Silvia was younger, a memory that hovers over every present moment.
Interwoven with these visions are a string of odd happenings that seem to defy explanation. A vase from Silvia’s past reappears in her apartment after vanishing from an antique shop, a bouquet of flowers wilts in minutes, and a little girl, representing the younger Silvia, appears and vanishes. As the days pass, it becomes increasingly clear that the people around Silvia may be conspiring against her. Her sense of trust frays as neighbors, colleagues, and even the doorman appear to be complicit in something sinister, and one night Roberto, Andy, and the doorman are seen driving away together, as if part of a plan she cannot quite grasp.
Seeking help, Silvia’s close friend Francesca Vincenzi, [Donna Jordan], invites her to attend a séance. The gathering is also attended by Andy, [Jho Jhenkins], and a stern neighbor Mr. Rossetti, [Mario Scaccia]. A blind psychic named Orchidea, [Niké Arrighi], tries to read Silvia’s troubled past. Orchidea taps into Silvia’s memories and prophesies that Silvia’s father drowned at sea and that Silvia herself pushed her mother off the balcony. The reading also warns that Silvia’s stepfather, Nicola, a man who has already caused her fear in private, will relentlessly pursue her. Frightened, Silvia storms out, and it’s revealed that Andy, Francesca, and Orchidea are part of a cult: they gather in an abandoned tunnel, don blue lab coats, and dissolve into the darkness.
Silvia’s haunting visions intensify, and her younger self seems to appear at will in her flat, vanishing only when she brings Mr. Rossetti into the scene. The next day, tragedy strikes: Francesca is found dead in her bathtub, and her cremated remains are left in Silvia’s apartment, deepening the sense that an unseen force is orchestrating everything. Silvia returns home to discover Marta’s black dress waiting in the bedroom, and her younger self presents a box containing a neighbor’s dead cat. The sense of danger spikes when Silvia encounters Nicola, her stepfather, in their old house; he tries to coerce and molest her. Terrified, she defeats him with a concrete block and escapes, but when she brings Roberto to see Nicola’s body, it has vanished.
The nightmare escalates as Silvia’s hallucinations push her toward violence. She breaks into Mr. Rossetti’s apartment and murders him with a meat cleaver, then stabs Roberto when he arrives. In a grotesque, ritualistic tableau, she arranges Roberto’s body with those of Mr. Rossetti and Nicola around a dining-table mock-up tea party. The showdown climaxes on a rooftop, where she and her younger self are dragged toward a fall; they tumble to the pavement, and only the adult Silvia’s corpse lies lifeless below.
Deeper into the tunnel system, Silvia’s naked body is laid out in a dark chamber. A large group of cultists, dressed in blue lab coats—among them the alive Roberto, Nicola, and Mr. Rossetti—surrounds her. In a brutal, ritual act, Roberto cuts her open and the cultists begin to tear and devour her organs. After this horrific tableau, the cultists vanish once more into the tunnels, leaving Silvia’s body behind as a stark, unsettling relic of the night’s terror.
