"After the devastation of the destruction of Oa, fallen friends, and exile from earth, Green Lantern Hal Jordan finds himself in his most desperate hour. Time is running out for him and the Corps as their emotional energy starts to mysteriously deplete, with world-ending repercussions. Now, without their unlimited power, the Green Lanterns will have to stop an all-out war... and an uprising within their own ranks"--Back cover.