A Tale of Two Sisters
The Enchanted Forest events take place before "The Apprentice" and "Heartless", and after Anna leaves Arendelle for the Enchanted Forest in "A Tale of Two Sisters". The story also takes place several years after the Snow Queen and her sisters visit the Enchanted Forest in "The Snow Queen", and five years after Gerda perishes at sea in "A Tale of Two Sisters". The Storybrooke events take place after "A Tale of Two Sisters"