Mistress Vile and Dark Specter are on a mission…to invade our world! While Lord Zedd develops unexpected powers, Grace’s second-in-command keeps a past plan alive, a plan which may provide a cutting edge in the battle with Dark Specter— or prove to be the Rangers’ undoing. Meanwhile, Mistress Vile finds the ultimate use for the Vessel, whose identity is finally revealed! In the emotional chain of events that follow, The Vessel themself will have to contend with where their allegiance will lie in the end. Will they be friend or foe for the Mighty Morphin Power Rangers? In either case, who will stop Mistress Vile and Dark Specter?
— Description from Comic Vine community (comicvine.gamespot.com).