Set to the time, 3 years after Breaking Dawn, when Bella Swan (now Cullen) started worrying about Renesmee and Jacob's closeness. Bella lied to Edward that the reason to her conciousness was because of her thirst. When the both of them started hunting, Bella separated ways with Edward and found a newborn. They adopted her as their own, but Edward didn't seemed to be pleased.
What would this newborn cost to them? What will happen to their lives? Will the Volturi found about this?