Determined to become one of the vaunted Legion of Doom, Harley attempts to make a big splash by crashing one of their criminal enterprises with the help of her BFF, Poison Ivy.

Realizing she needs a crew to pull off heists that will attract the Legion of Doom’s attention, Harley attempts to recruit Dr. Psycho and Clayface.

In search of a nemesis, Harley goes after Batman, but ends up with an adolescent Robin, making her the laughing stock of the criminal underworld.