When Clayface loses his arm in a heist, it turns out to be not only evidence for Jim Gordon, but also a key witness against Harley and her crew.

Harley gets an invite to the Legion of Doom’s prospective members party, but Ivy discovers that it’s Lex Luthor they’re really after.

In the season finale, Harley has her final showdown with the Joker, when [spoilers] [spoil] [spoilers]. Will they [spoiler]? Maybe. But you can bet they [spoiler]!

Harley and crew try to infiltrate Mr. Freeze's lair only to become human lab rats for his experiments to find a cure for his cryogenically frozen wife, Nora.

While Harley & Ivy deal with their post-kiss awkwardness, the President tells Gordon that he must get rid of Harley to put Gotham back on the map.

In order to defeat Psycho's army, Harley & Joker need to track down Fables' storybook with the Justice League inside.

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.

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

Harley and Ivy struggle to find their footing in their new respective roles in the Bat Family and the Legion of Doom.