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.

Harley gets an invite to the Legion of Doom’s prospective members party, but Ivy learns that she's the one they're really interested in.

Now a member of the Legion of Doom and The Joker’s equal, Harley finds herself spending time with him. Will she slip into her old ways?

After a falling out with her crew, Harley heads back home to Bensonhurst, where her doting mother waits for her... and her deadbeat dad, who’s more dangerous than anticipated.

Psycho unleashes a mind-controlled Ivy, Clayface, and King Shark on the Justice League who are trying to free Gotham.

When Frank goes missing, Harley and Ivy follow clues that lead them to a highly unconventional party alongside Gotham’s elite, including Commissioner Gordon – who is hungry for campaign donations.

After Harley receives access to Bruce Wayne's mind, she gets stuck in an endless loop of his most formative memory.

When an inadvertent plant zombie apocalypse breaks out in Gotham, Harley fights to save the city, while Ivy embraces her inner supervillain.

After her terraforming plan goes awry, Ivy is enticed by an offer to take over the Legion of Doom, while Harley questions her path forward.

While Lex lays siege to the LOD after coming up short with his Ozone Machine, Bane travels to Italy to fix a pasta-maker… and win Nora’s affection.

While Ivy's first day of work brings an unwelcome surprise, Harley juggles babysitting, landing a club membership, and her new friendship with Lena.