The Carmilla Movie is a 2017 Canadian comedy horror film directed by Spencer Maybee, based on the web series of the same name (2014–2016). Both the film and the web series were adapted from the 1872 gothic novella Carmilla by Joseph Sheridan Le Fanu. The film received a limited release in Canada on October 26, 2017.
Picking up five years after the series ends, Carmilla and Laura are now living in Toronto. Laura has been trying to start her career as a journalist, and Carmilla is enjoying the benefits of being human again. Laura has been having nightmares, revealed to be visions of Carmilla's past, and Carmilla's vampirism starts acting up. When Perry and LaFontaine look over Carmilla, it turns out Carmilla's humanity (dubbed "The Spark") is fading. Figuring there is a connection between this and Laura's dreams, Carmilla, Laura and their friends, Kirsch, Perry, LaFontaine, and Mel, make a trip to a mansion in Austria.
At the mansion, they are greeted by ghosts from Carmilla's past; the girls who were sacrificed in her mother's rituals and are unable to cross over into the afterlife. While they have no resentment for Carmilla's roles in their deaths, they explain that there is a ritual that can help the pass over; The Ash Moon Ritual; if Carmilla willingly sacrifices her mortality and human life, by channeling it into a gem and destroying said gem. After they celebrate at a masquerade party the ghosts are hosting, Carmilla channels her humanity into the gem, but it is stolen before it can be destroyed. The thief is revealed to be Carmilla's friend and love interest from centuries prior, Elle Sheridan (Dominique Provost-Chalkley), who previously betrayed Carmilla to her mother before her death.
Elle reveals she is the one behind Laura's nightmares, and that she has taken a sociopathic streak as a spirit; resenting the life Carmilla and Laura had together, and planning on stealing Carmilla's life for the purposes of restoring her own; all the while not caring that she's casting the other ghosts into the nightmare realm that once imprisoned them. Ell casts all but one of the ghosts into this dimension, along with LaFontaine, but is unable to leave the mansion. Elle stalks and picks off Laura and Carmilla's friends, sending them into the dimension as well, and tries to torment them into surrendering the last remaining ghost, Charlotte (Grace Lynn Kung). Using Charlotte as a trap, a fight ensues with Ell, that sends them into the nightmare realm as well.
Laura discovers the nightmare realm to be a dimension forcing it's captives to experience their worst memories constantly as a personal Hell. Still being pursued by Elle, Laura discovers Carmilla's worse memory to be of Elle's betrayal. After rescuing the other ghosts and their friends, Carmilla and Laura gather them to complete the Ash Moon ritual. Elle interrupts them yet again, holding a knife to Carmilla's throat and demanding the gem. Laura tries to appeal to Ell, to no avail, before Mel shoots Elle, subduing her and allowing the ritual to pass, freeing the ghosts to move on to the afterlife.
Returning home, Carmilla and Laura talk about how their relationship will progress with Carmilla being a vampire yet again. Laura states she doesn't see it as a problem and the two affirm their love for each other. Over the credits, Laura's career and further ventures with Carmilla, including their discovery of the Fountain of Youth, indicating that Laura will continue to live alongside Carmilla, as well as the two holding a baby. In an after credits scene, Carmilla is approached by the spirit of her sister Mattie (Sophia Walker), who warns her that the anglerfish entity from Silas was female and has laid eggs. Carmilla is immediately ready for the next adventure.