In Rosaline Saul’s gothic novel, The Vampire Virus, a young woman named Susanna and her guardian Amanda return to a derelict family estate to restore it.

Upon arrival, they discover a group of unsophisticated vampires led by Callum, who have lived in isolation and remain unaware of modern advancements like the sunshine pill that allows their kind to walk in daylight.

The narrative follows the cultural clash between the integrated, modern vampires and these savages, as Susanna and Amanda attempt to educate them and seek official recognition from the vampire High Court.

Central to the plot is the blooming romance between Susanna and Callum, which is complicated by the protagonist's half-human heritage and the tragic history of her parents.

Ultimately, the story explores themes of evolution, discipline, and eternal devotion as the group travels to the fortress of Mont-Saint-Michel to secure a future in the sun.