Legion Of Super Heroes #7

"Marooned in a lake of fire, Element Lad, Chemical Kid and Sun Boy face an ecological disaster of 31st-century proportions! And Dragonwing's got troubles of her own - with her sister's claws at her throat! Meanwhile, at the edges of United Planets space, the Dominators haven't forgotten their humiliation at the Legion's hands and the next stage of their plan is about to explode!"