In the series premiere, Harley Quinn is fed up being the Joker's sidekick and strikes out on her own – determined to become the criminal Queenpin of Gotham City.
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.
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.
Harley must rescue Ivy from the clutches of Scarecrow, who's trying to harvest her pheromones to make a super toxin that turns plants into sentient monsters.
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]!
After Gotham is declared no longer part of the United States, the newly formed Injustice League try to seize control of the city away from Harley in the season premiere episode.
Harley and Ivy team up with Catwoman to steal a museum artifact that's been boobytrapped by Dr. Trap. Meanwhile, Dr. Psycho tries to prove himself as a leader.
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.
Bruce Wayne awakens from his coma to find Gotham in shambles. Meanwhile, Two-Face attempts to forge a criminal alliance with Bane, to be the only two Big Bads left in Gotham.
When Harley and Ivy spot a seemingly sane Joker, they debate whether people can change at their core, revisiting a flashback about Harleen Quinzel's first day at Arkham Asylum.
Poison Ivy convinces Kite Man to go through with the wedding, but while they're preparing their special day, Commissioner Gordon is preparing to sabotage it.
After receiving a "Best Couple" nomination at the 83rd Annual Villy Awards, Ivy finds herself seated next to her ex's new girlfriend while Harley goes overboard to ensure their win.
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.
Gotham City's heroes and villains take on love! To celebrate their first ever Valentine's Day, Harley strives to plan the greatest, most romantic night ever for her and Ivy.
