Poison Ivy wants to protect the plants in Gotham City Park from climate change. Although that may sound like a noble plan, her solution actually seals off the entire park inside a giant, plant-based dome! With helpless citizens trapped inside, it's up to Batgirl to fight through the villain's fearsome flora. Can the hero stop the Queen of Green before her vile vegetation takes permanent root? Find out in this action-packed chapter book for DC Super Hero fans!