An 1880's Boston school teacher learns her intended's heart belongs to another-the night before the wedding. Fleeing to her cousins' farm in Idaho Territory, Emma Ward meets a suspicious lawman determined to find out what she's hiding, unaware that her jilted fiance is hot on her trail. Marshall Sam Hayes has an obsessive concern for law and order. The town's matchmaker tries to pair him up with the mysterious woman from Boston, but Sam resists. He believes it's a responsible lawman's duty to stay single. When an angry stranger arrives in town everything changes."