Town Marshal "Windy" Halliday sends for his old Bar-20 Ranch friends, "Hopalong" Cassidy and "Lucky" Jenkins, to help fight a gang of outlaws led by "Stiff-Hat" Bailey. Cassidy becomes interested in Mary Joyce, whose ranch is the main target of the Bailey gang. Things are complicated by the fact that Mary's husband, "Rusty" Joslin, and escaped convict, is tied up with the outlaws.