* The story begins with June Moone investigating the caves. She'd being haunted by nightmares of a woman. She's travelled half way around the world to search for something that potentially may not exist. She knows the name 'Enchantress'. She is accompanied by two people, Manuel and Luis, mountain guides she has worked with for several years. She can also speak Spanish. The mountain guides refuse to go into the cave with her. It seems like June has been plagued by these dreams for a long time.
* The story then goes to Arkham Asylum where it has been a peaceful night, until masked thugs descend from helicopters into the courtyard. They kill all the guards. The thugs are looking specifically for Harleen. "Doctor Quinzel. How nice of you to join us. You're looking... good enough to eat. Figuratively speaking, of course. I'm strictly vegan. At least today". The Joker then implies that the electroshock therapy is revenge for her doing it to him, and 'scorching what few dead and faded memories I had into a sizzling knot...'. In the film Harley seems to not fear the Joker but in here she's pleading for him to let her go. But then she starts to enjoy it, asking for more pain and pleasure.
* Then we go to Deadshot who is out in town. He gives coupons to homeless men and then watches them scramble to get them. We get the scene with him preparing to shoot the guy.
* Then we get the club scene which is largely unchanged.
* A scene with Deadshot and his daughter that was in the movie, but also him arguing with his ex-wife, and then Batman.
* Then the Joker and Harley in the car. We find out why the track is called 'You can't make my teeth hurt' and the line 'Hope you've got insurance'. The Joker doesn't give a shit and laughs at the fact that he drives into Gotham river leaving Harley to die. Batman says 'Joker took something important from me. It's my turn'.
* Then Harley in Belle Reve and Deadshot, being taken by Griggs.
* The Ace Chemicals scene is extended. It's implied the Joker makes her jump off as a joke, but then changes his mind similar to the film.
* He (Joker) manages to jump out of the helicopter. The helicopter crashes into a bank building. He laughs knowing that money is burning inside. 'God, I love the smell of burning cash in the morning'. I haven't read up to there yet but from a search it appears that he's not in it after that which I find confusing. I'll keep reading. The story has the same ending, though, with the Joker breaking Harley out.
* Description of the extended Ace Chemicals scene: The scene goes as follows:
* Joker points down towards the vats.
* Joker: "There. I was born down there."
* Harley stares down. She desperately wants the same.
* Joker: "Would you die for me?"
* Harley nods.
* Harley: "Yes."
* Joker: "No... that's too easy. Would you live for me?"
* Joker smiles, scaring her.
* Joker: "Will you embrace me, and only me?"
* Harley nods vigorously.
* Joker: "Will you bind your spirit to mine... in hate? Do you consign your soul to me? Do you laugh at the world in disgust?"
* Harley: "...yes."
* Joker: "Do not say this oath thoughtlessly. Desire becomes surrender. Surrender becomes power. Do you want it? Do you really want it?"
* Harley: "I do. I do."
* Joker: "Then goodbye, Doctor Quinzel."
* Joker gestures towards the edge of the vat. Without hesitation she jumps.
* Joker thinks "She's gone, forever. Problem solved." He pauses and touches his chest. He feels something. Love? Of course not. He couldn't see her floating face down and dying. Which was the original plan. He jumps down.