Harley Quinn's signature move

"So how do we get to your world?" Roland asked curiously. "Do we go find The Flash?"

"No need. I've got it right here." Harley Quinn took out a bright green piece of plant root and showed it to them. "Besides, it's not my world that's in trouble. It's the world of the Harley Quinn who ran off."

"What's that?"

"A piece of root from Swamp Thing. Bite into it raw, and you can connect to the Green and use its power to travel to other parallel universes."

"It's that amazing?" Roland paused. "Wait, isn't Poison Ivy part of the Green?"

"It's a long story. Let's catch that Harley Quinn first. I'll explain on the way."

"All right." Batman summoned the Batmobile, and the three of them climbed in. As they searched for Harley Quinn, they listened to the Harley Quinn in the car explain how it all started.

"It started with a kidnapping at S.T.A.R. Labs. Poison Ivy and Plant Master kidnapped a scientist named Alec...

"Holland and used him to create a virus that turns people into plant hybrids—"

"The me from that world saw through Poison Ivy's scheme and seduced her into handing over a piece of Swamp Thing's root. The Swamp Thing in that world has become the complete embodiment of the Green. He doesn't care about humans. Although he thinks Plant Master is too extreme, he can't be bothered to stop him. Or rather, he doesn't think stopping Plant Master is his job."

"To stop Plant Master, the me from that world used Swamp Thing's root to come to my world. But something had happened to Bruce in my world, so we came to yours together."

"But she's got a few screws loose. When she found out today was Thursday, she betrayed me and decided