Roseanne Duncan witnesses her employer push his sickly wife down the staircase. Fearing she'll have to testify against a prominent man in town, she's given an ad for a mail-order bride in Dodge City. Believing this is a way for her to escape the possible danger of her employer, she travels to Dodge City and marries under the name of Abigail Johnson. 

Logan Granger is a Pinkerton Detective assigned to Dodge City area as an undercover bartender. When his mail-order bride, "Abby," steps off the train she doesn't fit the description of a matronly woman who has agreed to his marriage contract of no emotional attachments. There's no time to reconsider, the preacher is waiting to marry them.

Rose hadn't expected the handsome man waiting for her to be a bartender with a six shooter on his hip and a badge on his chest. Logan hadn't expected his soon-to-be wife to be young, beautiful, and a runaway murder witness.