New York City Serenade

"New York City Serenade" is the twelfth episode of the third season of Once Upon a Time, and the show's 56th episode overall. It premiered March 9, 2014.

Synopsis
After Rumplestiltskin sacrificed his life to stop Pan from enacting another curse, Regina obliterated her original curse, which erased Storybrooke from existence and whisked its residents back to Fairy Tale Land – leaving Emma and Henry back in our world with no memories of Storybrooke. But all is not well back in the Enchanted Forest when Hook comes calling on Emma in New York City in an attempt to jog her memory so that she can once again help her fairy tale family and friends out of a desperate situation.