In this story, a young girl named Ella Redisheer runs away from home, having to spare the shame of having emerald-coloured-eyes and having a twin brother which was more preferred. After running away, she recalls at Foxfire, Sophie was talking about the Black Swan, she decides to join them after she heard Mr. Forkle had a twin and there was a pair of Song twins in it too. Also some spoiler warnings- don't proceed if you haven't read the entire series and if you don't want spoilers-. O_O