In a world of steamships and Progress, no one who sails due south across the Wild Sea ever returns. No one knows why. Dale Mortensen intends to solve the mystery. With the help of an old sailor and a reformed playboy searching for his missing sweetheart, he locates a captain and crew ambitious-not to mention crazy-enough to undertake the journey across the Wild Sea. The 'Infinity' and her crew sail south, but the truth of what really lies on the other side of the horizon is more amazing-and terrifying-than anything they can imagine. It's the adventure of a lifetime-and it may just get Dale and his friends killed.