Stacy always knew that the intelligent, playful wolves who raised her weren't like other animals. Normal wolf packs don't spend their time rescuing animals and caring for an orphaned girl. But lately, Stacy's wolves have revealed to her just how special they are--supernaturally special. The wolves each have their own unique ability: they can breathe underwater, run at impossible speeds, heal wounds, and more. They're extraordinary--but how did they get that way? Determined to uncover the truth, Stacy leads the pack north. But the harsh tundra biome pushes the pack to its limits. Can they survive long enough to discover the truth? And is Stacy prepared for what the truth actually is?