Rescue the Lanterns! The mystery of the Dark Sectors begins to unravel. To rescue Kilowog and his squad of surviving Lanterns, John enters the realm of the Golden Centurions and their mysterious master, the Lightbringer! Meanwhile on Oa, Keli lies in a coma, while Jo's team closes in on those responsible for the destruction of the power battery, but a surprise arrival takes a key investigator off the board!