The Green Lantern Corps and the Sinestro Corps have joined forces to police the universe! However, will they have to survive their gravest challenge to date in HAL JORDAN AND THE GREEN LANTERN CORPS VOL. 4, as a part of DC Universe Rebirth! The Green Lantern Corps has united with their once mortal enemies the Sinestro Corps, but there's a storm brewing on the horizon as an enemy from the future arrives to rip the two apart.