The Belle of Bar-Z Ranch: Jessie, a young woman at the Bar Z Ranch, who is engaged to Jack Howard. On the day of the cowboys' "hoedown," Jack presents her with an engagement ring and they plan to marry after the roundup. A misunderstanding arises when Jack dances with one of Jessie's friends, causing her to doubt his fidelity. Meanwhile, other ranch hands, inspired by the leap year, also seek to marry, leading to a chaotic series of races and a busy Justice of the Peace.