Detective 735 (Aug. 99) sees Greg Rucka, Dan Jurgens and Bill Siekiewicz bring a three-part Poison Ivy/Clayface story to a resolution, part of No Man’s Land.
Batman is busy battling Basil Karlo, who emerged from the earth with even greater powers than before. Poison Ivy, trapped by Clayface, was freed at the end of the last part of the story, and takes quick vengeance on Karlo.
She uses his body as fertilizer, basically, completely encasing him in plant life. Batman is grateful, largely because she did not kill him.
Intercut with this, James Gordon sends Renee Montoya to Two-Face, to inform him that the peace deal between them has ended. Two-Face’s attempted hit on Gordon nullified the deal, in his eyes.
Bane also appears, as a mysterious woman offers him a big payment on behalf of her even more mysterious boss, for Bane to return to Gotham.
Two-Face was none too pleased with Gordon calling off their deal. It was a peace pact with Two-Face, how could you expect not to be betrayed? Two-Face is now holding Renee Montoya, and her family, as hostages against any action by Gordon or the police.
Back in the park, Batman and Robin discover that the discs they went in to retrieve had been destroyed by Ivy long before. With Ivy sheltering many of Gotham’s abandoned children, Batman has little option but to cede her Robinson Park, as long as the children are kept fed and safe.