When Carna comes to help her brother on his dude ranch, she runs into her childhood arch enemy, Miller. Only, he's gone from being a skinny dork to a handsome and appealing man. Not that she would ever admit it. Her new mission in life is to avoid him at all costs. Miller can't believe Smith's bratty little sister grew up to be such a kind, compassionate woman. But that doesn't mean that he is letting go of their childhood animosity. After all, teasing her is fun and she always has the best comebacks. But when they're paired up to represent the ranch at a three day dude competition, with the future of the whole ranch hinging on the outcome, can they set aside their differences long enough to come home with the customers they need to survive?