This first episode of The Montana Brides introduces Violet, Iris, and Rose Kilburn, heiresses to the Kilburn family cattle fortune. Rocking Horse Ranch runs 5000 head of cattle, but all the ranch hands are getting old. The sisters need someone to run the ranch, so the eldest sister Violet hatches the idea of getting mail order husbands for the three of them. There's only one problem. Cornell Pollard, the sisters' guardian and the executor of their estate, doesn't approve. Violet must challenge Pollard and her own role as his ally to find love and gain control over her own life.
The sisters pick up their prospective grooms from the train station and bring them back to the Ranch. The men stay in a neighboring house until the minister comes at the end of the week to marry them all. Things quickly start to go wrong. Everybody starts butting heads, and Violet finds herself embroiled in a family drama the likes of which Rocking Horse Ranch has never seen before.
Will Violet's plan to get married end in disaster, or can she and her sisters find love with a group of strange men? Are these men what they appear to be, or is something more sinister at work?