"The Last Testament of the First Lantern"
*Before the Green Lantern Corps, the Guardians of the Universe embedded a power battery inside a man, imbuing him with unimaginable power. Eventually fearing him, they stole that power back for their own control, but now Volthoom, the First Lantern, has returned with a plan to force Jessica and Simon to help him regain his lost godhood. *Source: dccomics.com