Ada, a curious archaeologist, arrives in a remote village in Transylvania. She discoveres ancient artifact - an obsidian bat statue. The artifact, however, holds a powerful secret that soon changes her life. As Ada embarks on a dark journey, she finds herself evolving into a creature of the night, discovering newfound powers and a hunger that can only be satiated by the taste of human blood.

Batgirl is new to the scene of superhero fighting and whilst Gotham believes Batman is the new strange bat creature attacking Gotham, Batgirl follows the clues and falls into a trap where she learns of a horrifying truth and becomes changed