Carmilla arrives in a quiet corner of South Carolina, chasing a rumor about a woman named Millarca and armed with nothing but a street address. The only lead she has is a single clue, and when she reaches the shuttered house, the owner, Troy, bluntly tells her that no one by that name has ever lived there. He offers a ride into town, and later, by chance, Carmilla finds herself at a local restaurant where Troy’s daughter, Laura, works. Laura’s curiosity about the mystery is infectious, and she presses Carmilla for more details. In a moment of candor, Carmilla confesses that Millarca is her mother—a mother she never really knew. The revelation unsettles Carmilla more than she expects, and she pulls away, irritated by Laura’s probing questions. Yet Laura is not deterred and hints that her father once rented out a trailer, a thread that Carmilla follows with reluctant interest. When Carmilla asks for public records, the police station bluntly warns that it will take two business days to retrieve anything substantial.
At Laura’s insistence, Troy allows Carmilla to stay in the trailer that he once lent to Millarca. The arrangement seems transactional at first, but Laura invites Carmilla to spend time with her, and the two begin to grow closer in a quiet, uneasy way. Troy watches their developing bond with growing concern, warned by his memory of Millarca’s troubles that the daughter might be following in a dangerous path. His fear deepens when Laura becomes visibly uncomfortable as Troy tries to kiss her, tears spilling as he confesses that she reminds him of her dead mother. In a later confession, Troy explains that Millarca and Karen, Laura’s mother, were once friends, a fact he never approved of. A devout Christian, he believes Millarca was a corrupting influence. He tells Carmilla that her mother was a thief who skipped out on rent, and he urges Carmilla to leave town soon so that Laura does not grow too attached to someone who is almost certainly leaving.
Before Carmilla departs, she checks the police records and learns that officers were called to Troy’s house. Millarca’s statement describes a lesbian affair with Karen, a claim that Troy corroborates when Laura demands the full truth. The story darkens further when Troy reveals a brutal past: he beat both women after discovering their relationship, a violence he explains as punishment for their “blood fetishism.” He blames Millarca for Karen’s mysterious illness and eventual death, insisting that Millarca was a vampire who seduced Karen. The confrontation awakens a painful realization in Laura as she self-injures, but in Carmilla’s presence she begins to understand herself and her sexuality more clearly. The two women choose to lean into a shared future, initiating a relationship that mirrors the past they have inherited.
Carmilla eventually uncovers the deeper wounds Laura carries—scars that serve as a stark reminder of self-injury—and she urges Laura to stop. She makes it clear that she will no longer participate in blood fetishism, recognizing it as a harmful substitute for self-harm. The two contemplate leaving town together, chasing the possibility of a new life away from the shadows of their families, but Laura resists at the last moment. Troy grows increasingly suspicious that Laura remains in contact with Carmilla and warns that he will not permit Carmilla to hurt his daughter. Frustrated, Laura insists that Carmilla has done nothing wrong, though Troy’s vigilance grows sharper. Then he breaks into Laura’s room and discovers the extent of her scars, misreading them as proof of Carmilla’s vampirism and threatening to kill Carmilla as he once did Millarca.
In a drastic, final attempt to control the situation, Troy binds Laura to her bed and declares that Carmilla’s return would be proof of vampirism. Laura, desperate, warns Carmilla to stay away, while Carmilla refuses to abandon Laura. Laura tearfully recounts to Carmilla that Troy is the one who killed Millarca. The confrontation escalates when Troy—an object of fear and a hunter of legends—shoots Carmilla with a bow and arrow. Laura intervenes, stopping him from delivering the final blow. As Laura calls the police, Troy retrieves a knife and ends Carmilla’s life. In Carmilla’s dying moments, a telepathic bond with her mother flashes before her eyes, suggesting that Carmilla herself may be a dhampir and that Troy’s suspicions about Millarca held a grain of truth. The moment is both tragic and telling, and Laura flees into the night as the sirens approach, leaving the truth of the family curse and the fate of Carmilla to be carried by the dawn.