When Harley Quinn finally broke up with the Joker, Batman thought he would have to worry less about her from now on. but it didn't take long for news to arrive, that Harley was going after scientists and stealing from the labs. Even Poison Ivy could not give an answer to Harley's plans, so Batman decided to finally find and confront her personally. After getting a hint on her location Batman was waiting silently for Harley at the docks and ready to strike at any given moment. As promised, she showed up, Batman tried to get to her but Harley seemed to have learned some tricks of her own and managed to blast him with a weird laser-gun.
Before he knew what hit him, Batman started to shrink more and more with every passing second. While struggeling with his now oversized outfit, Harley slowly but excited approched the shrunken hero and removed his mask. Worried about his secret identity, Batman wanted to scream at her but realized his voice sounded different. Like the one of a child... no, not just a child, he soon realized the gun had changed much more than just his size and age. Batman was actually turned into a young little girl.
Still trying to understand what has happened to him, Harley removes Bats Utility Belt and throws it into the ocean, leaving the newly changed hero powerless.
Harley started to explain that after her break up with Joker, she started to feel lonely. And unfortunately Ivy was too busy with her own plans to be bothered with, and returning to the Joker was not an option at all. So she decided to do the same as the Batman and get herself a little child, a sidekick that will step in her footsteps someday and she can take care of and reak havoc with together.
And what better way to prove her independence from the Joker than removing the one thing he likes the most, his nemesis, the Batman.
Unfortunately not being able to fight back in his current form, Harley picked the little child up, bringing her to her hideout. The former Batman yelling at her that this was crazy and her plan will never work out. with a smile Harley promise him, that she knows exactly how to convince her new little bundle to join her.
Maybe Harley brings "Bryce" Wayne to the Joker?