Emma Swan is the savior. She is the daughter of Snow White and Prince Charming-- that much is known. However, what people don't know is that they have another daughter, Grace.
Supposedly, she is Emma's twin sister, though there have been many things to go on during her life to have people find this hard to believe. Much like Emma and her parents, Grace was separated from them at birth, though little did they know just how long it would be until they were to see each other once more.
Throughout her life, Grace travels to many realms, meeting new people, reuniting with old friends and enemies, and is eventually reunited with her family. What will happen when she meets them? What will happen when all of her questions are answered? She might find that they all share many similarities, though they may have many differences as well.
This story is also posted on Quotev (StarksSpangledBanner).