The unnamed girl, dubbed the “Maiden”, awakens as a prisoner within Castle Dimitrescu’s dungeon where she finds a note from a previous prisoner that gives her clues on how to escape before the denizens of the castle come looking for her. Through exploration of the castle, the Maiden learns of Alcina Dimitrescu and her three daughters, the current owners of the castle. Discoverable notes detail how previous maids had come to the castle to work and then disappeared. Ultimately, the Maiden escapes the dungeon and enters the Castle proper.
Within the Castle, the Maiden discovers notes which detail how Dimitrescu produces a high quality vine known as Sanguis Virginis (Latin for “Maiden’s Blood”). From the torturous devices in the castle dungeon and the blood evidence in the main hall, it’s heavily implied that literal maiden’s blood is used in its creation. The Maiden finds the courtyard key but is attacked by one of Dimitrescu’s “daughters”. Although bitten, she manages to evade the pursuer and is able to reach the courtyard door and unlock it with the key. Dimitrescu herself appears to block her path and comments how it is nice to finally meet the Maiden before she grabs and impales her victim using large claws sprouting from her hands.
Source