Gotham City's inhabitants were in inexplicable chaos and despair. The city's skyscrapers were overrun with poisonous ivy that sprouted rapidly, suffocating the city in a green grasp.

Every inch of Gotham, from its tallest spires to its darkest alleys, was entwined with malignant vegetation. The citizens were terrified, their city was being strangled, and they were helpless.

At the heart of the chaos, in the city's central park, Poison Ivy, infamous eco-terrorist, stood with a disturbingly calm demeanor. She was visibly pregnant, her glowing green eyes turning darker with determination.

Meanwhile, Batman lurked atop a nearby skyscraper, surveying the unfolding crisis. His gaze was fixed on Poison Ivy, his mind racing to formulate a plan.

Batman knew he couldn't just apprehend Ivy. Her condition made things complicated. He needed an antidote to counteract the plant toxins and ensure her and the baby's safety.

At the Batcave, Batman worked tirelessly, researching and experimenting to develop the antidote. The Batcomputer beeped with data, but time was against him.

Gotham's plight worsened. Buildings crumbled under the overgrowth, and people fell ill from the toxic environment. Desperate screams echoed through the city, but Ivy seemed unmoved.

Batman finally made a breakthrough. He discovered a rare orchid extract that could neutralize Ivy's toxins. But obtaining it required venturing into dangerous territory.

Unbeknown to Batman, Ivy felt her strength wane. Her pregnancy was taking its toll, diminishing her control over the toxic vegetation. Her desperation grew.

Batman traveled to the treacherous mountains of Tibet, where the rare orchid grew. It was a grueling journey, but the lives at stake kept him going.

After a perilous climb, Batman managed to procure the orchid. Exhausted but determined, he headed home, racing against time to synthesize the antidote.

Back in Gotham, Ivy's condition deteriorated. Her control over the environment weakened, causing the plant growth to turn erratic and destructive. The city was at the brink of crumbling.

Batman arrived just in time. He rushed to the Batcave and prepared the antidote. The fate of Gotham and Ivy were now in his hands.

Batman confronted Ivy at the park. Despite her weakening state, Ivy resisted. She was afraid, unsure if she could trust her longtime enemy.

Batman offered the antidote, promising it would save her and her unborn child. Ivy, cornered and vulnerable, found herself in a predicament.

Reluctantly, Ivy took the antidote. The effect was immediate; her control over the plants ceased, and the city's vegetation began to recede.

Ivy fell unconscious as the antidote neutralized her toxins. Batman ensured she was stable and contacted an anonymous tip to get her medical help.

Slowly but surely, Gotham City started to recover. Its citizens emerged from their homes, relieved to see the suffocating greenery pulled back.

Batman watched from a distance as the medical team took Ivy away. His mission was complete, but he couldn't help but feel concerned for his adversary.

Days turned into weeks, and life in Gotham gradually returned to its usual bustle. The green terror was becoming a haunting memory.

However, Batman kept a watchful eye on Ivy. Through his sources, he ensured she received the best medical care. Her actions nearly destroyed the city, but he understood her desperation.

Ivy woke up in an unfamiliar room, free of her toxic control, her belly still round, her unborn child safe. She felt a strange sense of peace.

It was a long road to recovery, but Ivy realized she was not alone. Batman had ensured that she and her unborn child were safe. She felt gratitude and an unfamiliar guilt.

As Ivy was recovering, Gotham was healing too. The city had survived its biggest challenge yet, thanks to Batman, forever its silent guardian.

The enigma of Poison Ivy, for now, seemed to have reached a resolution. Batman had saved both the city and Ivy, proving that even in the darkest of times, heroes emerge.