Batman: Arkham Knight’s Harley Quinn DLC is a prequel

New details from Amazon's store page for Batman: Arkham Knight have revealed that the game's Harley Quinn 'Story Pack' DLC will serve as a prequel leading up to the events in the main game.

"For the first time in the Arkham series take on the role of Joker’s psychotic side-kick Harley Quinn and wreak havoc inside the Blüdhaven Police Department. With this exclusive Story Pack experience events in the lead-up to Arkham Knight as you infiltrate Blüdhaven to rescue your partner in crime: Poison Ivy. Delve deep into Harley’s demented nature and utilize her devastating baseball bat to smash, crash and bash your way to a friend very much in need."

The Harley Quinn Story Pack is actually included as part of a pre-order bonus for Arkham Knight, although I'm sure it'll also be available for purchase separately if you choose to hold off on getting the game.

In addition to the Harley Quinn Story Pack, pre-ordering will also unlock "4 Exclusive Challenge Maps" as well as the "Red Hood Story Pack," which sees you play as the ruthless vigilante Red Hood. Sadly, Amazon has no detailed that content.

Batman: Arkham Knight was recently delayed across all systems, and is now expected to release on June 23rd.