The Joker has threatened to kill Commissioner Gordon if Batman shows up to help Batgirl. It looks like it’s up to her and Robin to save the Commissioner. You’ll be able to play this prequel story beginning on July 14 for season pass holders. You can also purchase it a la carte for $6.99 on July 21. The Batgirl DLC is developed by WB Montreal who also developed Batman: Arkham Origins,with the remainder of the add-on content under development at Rocksteady. You can watch the trailer below.