Tilda Fordwells is in despair. She has lost her lover and is now forced to hide from people in a quiet cottage near Lake Llangors. Solitude should heal her, but life brings Tilda a “surprise”. One morning she finds herself in a thick fog. When it dissipates, an incredible sight opens up in front of her: a boat is floating on the lake, in which stands a beautiful woman in ancient clothes. Who is she and where did she come from? Tilda cannot forget the stranger. She is sure that the spirits are trying to contact her. Tilda begins her investigation. She will not only have to find out the secret of the ghost, but also understand how the monster Avank is connected with him, the legends about which still chill the blood of local residents.