After her grandmother calls her asking for help, Jocelyn drops everything and heads back home to Harmony Creek, Colorado. Her grandmother runs a living history museum: a ranch and homestead where volunteers wear clothing from the early 1900s and demonstrate how things were done in the old West, from making soap to shearing sheep. The place is in financial trouble, and it needs the revenue from the annual festival to survive. There's just one thing that makes this a little awkward: Mack, who's divorced, and who's now the caretaker and blacksmith at the homestead. Jocelyn and Mack have their own shared history, which includes both stolen kisses and teenage rivalry. Even as the past and present collide, they have to save Harmony Ranch.