Laura and her father live in a remote castle. On her birthday she gets an amulet that fulfills wishes. Laura wants nothing more than someone her age at her side. Suddenly Carmilla is at the door. The two girls quickly become friends. Carmilla's nature is ambivalent. In one moment she is nice and friendly, in the other brash and decisive. Fearing to lose her friend, Laura always gives in everything. She discovers a cruel story in a diary of one of her ancestors. Carmilla does not want Laura to know more about it. Something is wrong with Carmilla...