Green Lantern: Our Worlds at War (2001-) #1

"THE PAST'S FACE--POWER'S FUTURE." Green Lantern already has his hands full when Superman asks him to do something about the fact that Pluto is missing and messing with the gravitational fields of all the other planets in the solar system. Unfortunately for him, he also has to deal with the return of his greatest enemy, Sinestro!