A mysterious new vigilante dressed as a judge appears in Gotham City, where he targets the rogues' gallery of villains with vicious fury. Batman is the only person who must discover the Judge's identity and stop him before he crosses the line.

Harley reflects on her first meeting with the Joker as she plots to eliminate her main competition in his attentions – Batman. She captures the Dark Knight and she wants to gain Joker's favor by doing away with him. But of course, the crazy clown's massive ego would never allow anyone else the "honor" of doing away with his mortal enemy.