This film was inspired by Marilyn Manson song "If I Was Your Vampire". In 19th century, Charlotte, a Vampire woman, falls in love with the sweet Scarlet, a human girl. They both live an intense and forbidden romance. An insult to the natural order of things, in every way.

In Slavic mythology, Rusalki are believed to be the spirits of young women who drowned in rivers or lakes. Their characteristics are similar to those of water nymphs, mermaids, and succubi. Rusalki tells the story of Leon, a historian who travels to remote cities to finish his thesis on historical places. Leon meets Liz, a widow who is struggling to cope with the recent disappearance of her only son. Liz allows Leon to spend a few nights at her house. However, unusual things begin to happen.

Upon returning home, a man finds his wife injured and unconscious inside the house, from then on the couple begins to experience a state of paranoia as they try to understand who is hanging around their house.

Upon returning home, a man finds his wife injured and unconscious inside the house, from then on the couple begins to experience a state of paranoia as they try to understand who is hanging around their house.

Upon returning home, a man finds his wife injured and unconscious inside the house, from then on the couple begins to experience a state of paranoia as they try to understand who is hanging around their house.

Upon returning home, a man finds his wife injured and unconscious inside the house, from then on the couple begins to experience a state of paranoia as they try to understand who is hanging around their house.

Upon returning home, a man finds his wife injured and unconscious inside the house, from then on the couple begins to experience a state of paranoia as they try to understand who is hanging around their house.