 The residents of Storybrooke are faced with threats from the Evil Queen and Mr. Hyde, both with different agendas following the arrival of refugees from the Land of Untold Stories.This leads to events to test Emma's savior abilities that results in the arrival of the Black Fairy to begin the final battle that was prophesied centuries ago.As dark and light collide, a new, and darker curse is unleashed, leading to the fall of all the realms.