Ahead of its release next week, Warner Bros. on Wednesday released the first full trailer for Batman: Arkham Knight's Batgirl-focused expansion, A Matter of Family.

In this DLC, which launches July 14, you'll get to play as Batgirl for the first time in the Arkham series. The expansion is set prior to the events of Batman: Arkham Asylum, which explains Harley Quinn's attire.

You also may notice that Batgirl appears to move much quicker than Batman as she deals with thugs. Also on display are some of her useful gadgets and other characters from previous games.

A Matter of Family will launch on July 14 through the $40 Arkham Knight DLC pass. The add-on will be sold separately starting July 21 for $7.

In terms of story, we recently learned that Batgirl will team up with Robin in the expansion to rescue Batgirl's father, Commissioner Gordon, who has been kidnapped by Joker.

The DLC was created by Batman: Arkham Origins developer WB Montreal, not Arkham Knight developer Rocksteady, and is set in a new area called the Seagate Amusement Park. The environment features a nautical theme, but is built on top of an oil rig that--naturally--is rigged to be a death trap.