<P> This season marks a significant change for the series, as it was announced at the end of the sixth season that the majority of the main cast members would not be returning for season 7 . Lana Parrilla, Colin O'Donoghue, and Robert Carlyle will be the only ones remaining . Andrew J. West and Alison Fernandez were announced as new regulars in May 2017 . Dania Ramirez and Gabrielle Anwar were announced as additional regulars in July 2017 . In August 2017, it was announced that Mekia Cox had been promoted to series regular after initially joining the cast in July as recurring . </P> <P> The storyline is softly rebooted with a main narrative led by an adult Henry Mills, set several years after last season's events . </P> <P> Years after the Final Battle was won, Henry decides to leave Storybrooke to other realms in search of his own story . After years of realm travelling, he ends up in the New Enchanted Forest, where he gets tangled into a conflict between Cinderella, Lady Tremaine, Drizella, a resistance led by Princess Tiana, and the Coven of the Eight led by Mother Gothel that eventually leads to the casting of another curse that takes the inhabitants to a newly created neighbourhood called Hyperion Heights in Seattle . Lucy, Henry's daughter, tries to get Henry believe again to break the curse, but the breaking of the curse would have chilling consequences while an awaken Mother Gothel seeks the members of her coven, having captured Lady Tremaine and Drizella . </P> <Ul> <Li> Lana Parrilla as Evil Queen / Regina Mills / Roni </Li> <Li> Colin O'Donoghue as Captain Hook / Killian Jones / Rogers </Li> <Li> Andrew J. West as Henry Mills </Li> <Li> Dania Ramirez as Cinderella / Jacinda </Li> <Li> Gabrielle Anwar as Rapunzel / Lady Tremaine / Victoria Belfrey </Li> <Li> Alison Fernandez as Lucy </Li> <Li> Robert Carlyle as Rumplestiltskin / Mr. Gold / Weaver </Li> <Li> Mekia Cox as Tiana / Sabine </Li> </Ul>

What is once upon a time season 7 going to be about
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