A portal to a Dark Multiverse has been opened in Gotham City, providing a link to the most dangerous villains imaginable, the Dark Knights. Led by The Batman Who Laughs, a demonic hybrid of The Joker and Batman, these Super-Villains are seeking a way into our universe in order to destroy it. Join forces with Batman, Green Lantern, Hawkgirl and WonderWoman to recruit powerful DC characters for,big an alliance against evil. In this cooperative game, players must work together to defeat the Dark Knights and The Batman Who Laughs before everything is lost to darkness.