Sophie Swankowski is the hero from the stories she's been hearing all her life: she's the girl who will save the world. Or so she's been told. Now she and her unlikely guardian-the gruff, filthy mermaid Syrena-must travel the pitch-black seas from broken-down Chelsea, Massachusetts, to Syrena's homeland in Poland. Along the way, Syrena will reveal the terrible truth about her past, and teach Sophie about the ages-old source of her newly discovered power. But left behind in Chelsea, without Sophi