On a foggy night in Devon, Gail, a working border collie, gives birth to a litter of three puppies in a barn on Borough Farm. As she rests with her newborns, her father, Sir Gregory, enters the scene, surprised by the tiny arrivals and the quiet courage of Gail. He names the third pup after the night itself, and the little girl becomes Mist, a moniker that feels as mysterious as the mist that framed her birth. The two other pups, Storm and Drift, are welcomed by all the other dogs—Swift, Ernie, and Jake—with broad smiles, while Fern, Mist’s aunt, keeps a wary distance and doesn’t seem to warm to the idea of puppies at all. Fern is clearly set apart by her mood, almost skeptical of the new brood.
As Mist learns to see the world in a new way, she discovers that she can notice things others cannot. She peers out a window and glimpses a flock of sheep, a sight that thrills her, even though Storm and Drift doubt she’s really seen anything at all. The trio wrestles with the day’s energy and fatigue, finally drifting off to sleep side by side. Mist’s fascination with the flock grows stronger, and she seems more drawn to the life of a working sheepdog than her siblings. Still, Sir Gregory gently weighs Mist’s promise against the pace of the training, and Gail realizes the time has come to decide which puppies will stay on Borough Farm to learn the craft and which must leave to begin new lives elsewhere. The moment arrives when two different families arrive to adopt Storm and Drift, and Gail watches with a mix of pride and sadness as they drive away.
Winter settles over Borough Farm, and Fern remains cool toward Mist. One day Mist, swept up in her enthusiasm, dashes off into the woods and finds herself in a perilous moment that requires rescue by the Boss and Sir Gregory. The close call amuses Fern, who can’t help but feel a sting of triumph at Mist’s vulnerability revealing her own courage in the moment. With Mist eager to prove herself, the first official test as a working sheepdog arrives—and she fails, earning the Boss’s stern walk of shame, a moment that pleases Fern in spite of herself.
Undeterred, Mist begins to improvise and practice in new ways. She rounds up ducks from a nearby pond, treating them as if they were sheep, a playful but practical plan that teaches her to control her instincts and focus her attention. The more Mist trains, the more Fern’s envy flickers into concern, especially when Fern pushes Mist toward a reckless decision that would involve rounding up rams instead of sheep. After a narrow escape, Mist is sternly corrected, and Fern watches with a hint of pride as Mist finds her footing. The next day, Mist passes her next test, and Sir Gregory beams with pride, grateful for how far his little pup has come from those early days. He dies soon after in his sleep, a death that leaves the farm quiet but not defeated; his memory lingers in Mist’s confidence and in the family’s routines.
With Sir Gregory gone, Mist’s footing wobbles for a time. The team still works, but the absence creates a gap that Fern fills with a new sense of responsibility and a renewed respect for Mist’s abilities. Then a misty day brings a daring rescue mission: Mist and Fern are sent to save a ram named MacPherson from a cliff. Mist heads into danger alone because Fern is afraid of heights, though she uses her remarkable hearing to guide Mist in the right direction. The ram lashes out and pushes Mist toward disaster, and everyone fears the worst—Fern, the Boss, and MacPherson assume Mist has fallen. Yet Mist survives and, drawing on the training Sir Gregory gave her, moves MacPherson away from the deadly edge with the adage she learned: > The power is in the eyes.
Back home, Fern admits she is proud of Mist and finally acknowledges her as a brilliant sheepdog, burying their rivalry at last. The farm returns to its steady rhythm as Mist resumes guiding the flock, this time with the support and love of her family. In the end, Mist works the sheep with a steady, confident presence, having earned her place among the pack and proven that patience, practice, and a familial bond can shape a remarkable dog who truly belongs to Borough Farm.
