When their friend is assaulted in the street of their hard-drinking, gun-toting Colorado town, a young schoolteacher and a spinster set out in an open wagon to find a safer life, an endeavor that pits them against violent natural elements and their friend's assailant.

For years Myra Rutledge and Annie de Silva, founding members of the Sisterhood, have funded an underground network run by former Supreme Court Justice Pearl Barnes to help women escape abusive relationships. When two of Pearl's clients fail to report for their weekly check-in, the Sisterhood and their allies begin a search for French model Amalie Laurent and her one-time maid, Rosalee Muno. Amalie's estranged husband, Lincoln Moss, is a distant cousin...