Abigail Doering begins her new life as Mrs. Abigail Ewing, mail-order bride to Grant Ewing of the Texas Rangers. After getting married on the spur of the moment in Borger, Texas, Grant and Abigail come home to Abigail's cottage on the Double A Ranch. Grace and Bill Bailey have decided to stay on, too, at least until Bill finishes breaking in the mustangs running free near the ranch. Once that job is finished, Grace and Bill will set off for the northern Rocky Mountains to start a new life on the frontier.

Grant and Abigail set up house in the hopes of escaping the kind of chaotic drama Grace and Bill faced. But their hopes and expectations soon fall to pieces when spoiled and conceited Florence Abbot gets up to her old tricks. Not content with making peace with Grace and Bill after Bill saved her life, she turns her critical eye on Abigail. She finds every excuse to needle Abigail and meddle with her new marriage. Her constant interference demands all the newlyweds' patience and love to deepen their connection to each other without falling into Florence's traps.

In the meantime, Grant has work to do, tracking down the gang of outlaws marauding on the prairie. With autumn coming on and the cowboys returning from Amarillo, tensions run high on the ranch. The ranch owner, Mr. Acton Abbot, also returns from Amarillo. He brings with him the profits from the cattle drive, luring the outlaws out of hiding and tempting them to evil deeds. In the flush of his new love for Abigail, Grant rallies Bill to help him protect the ranch. But before anyone can live happily ever after, all the newlyweds must join forces to save themselves and their new loves from the forces bent on their destruction.