AIn 1886, Gretta Pope wakes one morning to discover that her husband is gone. Ulysses Pope has left his family behind on the far edge of Minnesota?s western prairie with only the briefest of notes and no explanation for why he left or where he?s headed. It doesn?t take long for Gretta?s young sons, Eli and Danny, to set off after him, following the scant clues they can find, jumping trains to get where they need to go, and ending up in the rugged...