Green Lantern versus Aliens #1

Plot

Hal Jordan patrolled the spaceways in the name of cosmic justice as one of the greatest Green Lanterns to ever don the legendary power ring. In a never-before-told chapter of Hal's adventures, he faces and defeats the universe's ultimate killing machines: the dreaded Aliens. At the battle's end, Hal chose to "contain" their evil, rather than exterminate the creatures. Now it's years later, and Kyle Rayner has inherited Hal's duties -- as well as responsibility for some of Hal's "unfinished business." As Kyle and some former members of the GL Corps struggle to save a planet from the acid-dripping beasts, he has a sinking feeling that this is a war with no chance for a happy ending.