Heather (Katherine McNamara, “Walker: Independence”) is a New York City girl and a best-selling author on a mission to conquer writer’s block and avoid paying back an advance on her next book. Her plans take a sudden swerve when she inherits a family ranch in Montana. With her two best friends, Heather heads out for a “Yellowstone” adventure intent on a quick sale but is blindsided both by the ranch’s dilapidated condition and by Cliff (Dennis Andres, “Workin’ Moms”), the charming cowboy veterinarian next door who challenges her city ideals. Heather and her friends find more than they bargained for in this big sky adventure. Linda Kee (“Black Summer”) and Kaya Coleman (“Beyond Black Beauty”) also star.