"Milli and Mae don't really know how their people came to live here does, not even their wise and gentle Father. On Milliken's twelfth birthday, their father takes the two girls on an overnight skate down the trench--a coming-of-age ritual to teach them how to fish the frozen river, how to hunt the wild Trenchdogs that wander its frigid banks, and how to give proper thanks to their frozen Gods-- The Colden Ones. It's the trip of a lifetime until the girls push beyond the borders of their humble land and awaken the Trench's deadly defender...The Snowman!"--