Isolated from the outside world, fifteen-year-old Lara (Hannah Rae) lives in seclusion on a vast country estate with her father and strict governess Miss Fontaine (Jessica Raine). Late one evening, a mysterious carriage crash brings a young girl into their home to recuperate. Lara immediately becomes enchanted by this strange visitor who arouses her curiosity and awakens her burgeoning desires. This atmospheric coming-of-age tale is inspired by the 1872 Gothic vampire novella by Joseph Sheridan Le Fanu.