Aya lives in a secluded mansion with her father Alfred (also known as Doctor) and his assistant Maria. Her mother, Monika, passed away a year ago from an unknown illness. One night on the eve of the anniversary of her mother's death Aya is awakened by her father's scream, only to find her home riddled with walking corpses and other supernatural things. Determined to save her father, she must now face the true nature of his work.