Batgirl is taking the night off and going dancing.

while at the club she meets a mysterious man.

he wants to leave with her but she wants to dance. He uses his cane and she is mesmerized.

She has no control and follows him back to her home where he begins to feed off of her. During the feeding he sees her life as batgirl.

He is suddenly stricken with a new idea. a partner in the night.

He drains her and then gives her his wrist.She drinks deeply, too deeply. she has drained the vampire and he disintegrates.

Now Batgirl is a Vampire.

...

Batgirl is taking the night off and going dancing.

while at the club she meets a mysterious man.

he wants to leave with her but she wants to dance. He uses his cane and she is mesmerized.

She has no control and follows him back to her home where he begins to feed off of her. During the feeding he sees her life as batgirl.

He is suddenly stricken with a new idea. a partner in the night.

He drains her and then gives her his wrist.She drinks deeply, too deeply. she has drained the vampire and he disintegrates.

Now Batgirl is a Vampire.

She vows to use her new powers to bring fear into the criminals of Gotham.

She meets Star in the vestibule of a closed Museum.

She shows no fear and when Star tries to shock her with her powers she finds the Vampire bat is unaffected by them.

Batgirl then lifts her in the air and flings her aside. she is suddenly hungry, and desires food. she catches herself in time and runs away leaving the Mesmerized Star to follow her.

In another room Batgirl composes herself but is soon confronted by Star who offers herself to Batgirl.

The Vampire bat is too hungry and soon drains Star until she is gone.

Batgirl has a momentary clarity about what she has done, but soon her other personality comes forward, more powerful than her old one and assumes control.

The vampire Bat is in full control now.