Fem Merlin. Merlin/Arthur. What would have happened if Merlin had actually been born a girl? Would it have made any difference? To Arthur? To Morgana? To Camelot? Would Morgana turn evil if she had someone to confide in? And would Gwen be the servant that captured Arthur's heart?

In a desperate attempt to save their planet and those they love, the last of Earth's mightiest heroes return to the past to stop the end of the world before it begins. Their main weapon? A vow to stand by each other's side against any adversary no matter how dangerous. Can they lead by example and stop the heroes from destroying themselves or will they fall again? Time will tell