The story begins with Carmilla paying a late night visit to Sarah as a young girl, which she then attributes to a dream despite the evidence of a vampire bite. The interlude then unapologetically shows a sapphic sex-scene with Carmilla/Millarca and another woman. Following the interlude, the narrative returns to Le Fanu's original plot with the news that Mademoiselle Rheinfeldt, who was due to pay the protagonist a visit with her guardian, has been killed by a "monster." Sarah's vows to search for this monster are then interrupted by a carriage accident, in which a mysterious young woman is supposedly injured. Sarah then convinces her father Tobias to take in the seemingly vulnerable young lady so she may recover...