“Grounded” begins as Superman visits Philadelphia – on foot – then continues in a small town in Ohio where, as in many towns, a number of its residents are from other places. But when The Man of Steel discovers that there are also a number of residents secretly from other worlds, he unravels a mystery that may have grave consequences for Earth.

    After defeating his arch nemesis Nero, Green Lantern gains the power of his enemy as well that of every Green Lantern who has ever worn a power ring. Wielding such ultimate power, Green Lantern christens himself Ion and begins to use his godlike abilities in morally questionable ways. Now as Superman, Wonder Woman, and the Flash begin to distrust their teammate, the former Green Lantern must come to terms with his new capabilities or risk losing everything he has.