Ivy tries to save the environment from a corporate villain. Harley interferes with her usual violence, causing tension. Kite Man feels sidelined. The love triangle tightens.
Psycho betrays the team to revive the Joker. Harley and Ivy must fight together — but their stolen moments of happiness feel hollow when built on lies. Ivy decides she can't hurt Kite Man anymore.
A broken, amnesiac Batman returns as a gentle guy named "Bruce." Harley tries to use him for fun, but guilt kicks in. Meanwhile, Joker starts regaining his memories.
Ivy's bachelorette party. Harley tries to be supportive but ends up drunkenly confessing her love. Ivy admits she feels the same — but says she's going through with the wedding to Kite Man because it's "safe."
Flashback episode. Harley visits her toxic, judgmental family in the suburbs. Ivy comes along as her "friend" — and it becomes painfully clear how much they mean to each other.
Catwoman returns to steal a priceless artifact. Harley reluctantly teams up with her, leading to a heist that tests Ivy and Harley's bond.
Harley and Ivy begin a secret affair. The guilt eats at both. Kite Man suspects something but blames himself. The crew starts falling apart.
Psycho traps Harley and Ivy in a dreamscape that forces them to confront their real feelings. Ivy admits she loves Harley, but fears ruining their friendship. Harley realizes she's in love too.
Mr. Freeze wants to save his wife. Harley helps him, but the mission forces her to confront what real love looks like — not obsession, but sacrifice.
The Riddler takes over a university. Harley goes undercover as a student to stop him, but ends up learning more about herself and her toxic past with Joker.
The wedding day. At the altar, Kite Man sees how Ivy looks at Harley. He stops the ceremony himself: "I'm not gonna be someone's second choice." Ivy and Harley finally kiss — publicly. Then Joker attacks.
After blowing up the Joker, Harley and the crew emerge as Gotham's new rulers. But without Batman, chaos is fun until it's not. Ivy struggles with her feelings after Kite Man proposes.