Adalyn Stalling's clients convinced her to be a contestant on their reality TV show, The One. Hundreds of thousands of viewers tune in each week to watch a group of bachelorettes try to win one bachelor's heart, and then during the next season, watch bachelors do the same.

Adi appeared on the show twice-once as a potential love-match for the bachelor, once as the bachelorette. As a marketing executive for the firm who handles the show, Adi initially became a part of the cast in order to learn more from the "inside." But as much as she wanted to stay professionally removed, she ended up giving her heart to both Adam and Connor.
Both times, the men broke it off.

Now America's most famous "loser at love," Adalyn is trying to pick up the pieces of her life. Given the media frenzy and the paparazzi that chase her, she's finding it difficult. And just as she learns she may have picked up a stalker, her childhood friend, Chase Rollins, tracks her down at last. He informs her that her beloved grandfather is ailing and needs her help, in more ways than one.
So begins an epic summer in which Adalyn needs to decide where she belongs, what she is supposed to do, and with whom she might find true love at last. All Once Upon a Montana Summer...