Sinestro (The New 52: Green Lantern, Vol. 1)

In the aftermath of a deadly showdown between the Green Lantern Corps and a mysterious foe from the past, Hal Jordan has been stripped of his ring. Left standing is an unexpected new Green Lantern in town: Sinestro! And now, this renegade GL has set a course for Korugar with one purpose: To free his homeworld from the scourge of his own Sinestro Corps, with the not-so-willing help of Hal Jordan!

The volume collects issues 1-6 of Green Lantern, part of the DC Comics - The New 52 event.