Stranded in a Dark Sector with no rings and no backup* John Stewart is out of options* his back against the wall. After the Central Power Battery dies* John must live long enough to gather the surviving Green Lanterns and find a way home* while one of the newest Green Lanterns* Far Sector's Jo Mullein navigates a host of unknown dangers on the Green Lanterns' homeworld of Oa* as she works to uncover the cause of the battery's collapse and who was behind it.