After Sinestro's death, Hal Jordan leaves Earth to join the rest of the Corps to find out what happened to his old friend and mentor. Burdened with grief, Hal makes rash decisions, putting the Guardians and other Lanterns on their toes. Tired of following orders and seeing the Guardians do nothing after their best member is gone, demonstrating how dispensable they all are, Hal decides to act on his own. However, he is not alone, with other members of the Corps following him. This leads to a discovery the Guardians knew and withheld from the Corps members: Sinestro did not die; he actually deserted. With the discovery that his mentor and friend had betrayed them, Hal learns the truth about Sinestro, revealing that he was not the man he thought he was, the iron-fisted tyrant who ruled his sector, especially his home planet Korugar, and was feared as a dictator. With a new ring, Sinestro goes to Oa to overthrow the Guardians, whom he considers ineffective in maintaining order in the galaxy. He destroys the power battery on Oa, leaving the Green Lanterns at their mercy in the universe. He believes that true strength and order, which the universe so desperately needs, come from fear. Now Hal must confront his mentor and friend, a task that will be anything but easy.
