Upon returning to Storybrooke, the characters face immediate new threats:
: As the only person from the real world besides the Author, Henry enters the book to save his family. He rescues Emma and recruits Hook and Regina to stop the wedding of Robin Hood and Zelena, which would make the Author's changes permanent. [S4E23] Operation Mongoose (2)
: Before dying from the darkness's attack, the Apprentice reveals that only the Sorcerer, Merlin , has the power to destroy the darkness forever, setting the stage for Season 5. Key Revelations & Details Once Upon a Time season 4 finale recap: Operation Mongoose Upon returning to Storybrooke, the characters face immediate