Harley has taken down the Joker and Gotham City is finally hers for the taking - whatever's left of it.
Gotham has become a desolate wasteland following the huge earthquake caused by the collapse of Joker's tower. Harley's celebration in this new chaos is cut short when Penguin, Bane, Mr Freeze, The Riddler and Two Face join forces to restore order in the criminal underworld.
Calling themselves the Injustice League, this group now stands in the way of Harley and her crew from taking sole control of Gotham.
Harley Quinn returns Monday 21st June at 10:30pm on E4.