"The Dark Swan" is the first episode and the fifth season premiere of the American fantasy drama series Once Upon a Time, which aired on September 27, 2015. In this episode, the events of Emma Swan now being consumed by the Dark One has left the residents of Storybrooke without "The Savior." Now its up to Regina, Mary Margaret, Hook, David, Henry, Robin Hood, and Belle to find a way to save her, even if it means turning to a unlikely individual that they cannot trust.