The Mitchell Vineyard, in the rolling hills of
Northern California, is the very blood of Clovis Mitchell, a spare and dignified grandfather and guardian to Kelly and her brother, Chris. The heart of the household, though, is
Lassie, a handsome young collie, affectionate, obedient, sensitive, and very wise. A threat is in the air one night when Jamison and his associate, Finch, appear at the winery and offer to buy the land from Clovis. They get a refusal from the old man, while Lassie growls in the background. Jamison promises to return, and does, to claim Lassie, one of a litter he says escaped during a fire. She has a tattoo mark in her right ear to prove it. Clovis has no alternative but to give up the dog, and tells his heart-broken grandchildren. Lassie has an alternative; taken by private plane to Jamison's home in
Colorado Springs, fitted with a handsome green collar with gold studs, Lassie makes her escape. Chased by helicopter and kennel men through the rocks and hills of Colorado, Lassie manages to elude them and out-stare a cougar before she joins up with new friends – Gus, a down-at-heel wrestling manager and Apollo, a kindly mountain of a man and Gus's so-called star. About the time they are binding up Lassie's sores, giving her food and water, and moving along in their van, young Chris bolts on his first day of the school term and sets off alone in search of Lassie. With his distraught grandfather setting out to find the boy, and Kelly and her sweetheart, attorney Allan Fogerty, checking with the police, Chris takes a car conveyor in the direction of Colorado Springs. Soon after the truck takes off, a hungry and frightened Chris leaves the vehicle, buys food in a restaurant from a sympathetic waitress, then goes out to look for another truck, and finally dives into the back of a cattle truck. The restaurant waitress, hearing reports of Chris's disappearance, calls his home and tells his sister where the boy has been, but Chris is on the move again, and so is Lassie. He in an empty cattle truck, she in the doorway of a freight car. Lassie leaps from the freight car and continues her journey. Clovis and the police officer who is aiding in the search for Chris, hear his cries as he is about to be crushed by a herd of Longhorns being loaded into his hiding place. Everybody is home – everybody but Lassie, whose ownership by Clovis has been clarified by Allan, the young attorney, who is about to join the family as an in-law. Lassie continues her long, painful journey. Wet, sore-footed, and limping, she stumbles on the
Mike Curb Congregation, who are rehearsing. The group takes Lassie along to their engagement, where a flare is knocked over, causing a fire. Panic ensues. Lassie is trying to save the life of a kitten from a burning dressing room and is presumed dead.Thanksgiving Day arrives, and the family are settled down to dinner, while Clovis starts to say a prayer, regarding family friends and the loss of their beloved Lassie. During the prayer Chris hears a bark and looks to the fields through the dining room window, and spots Lassie, tired and filthy, wagging over the hill. Chris overjoyed, runs to meet Lassie, while his family watches with this miracle unfold. Lassie leaps at Chris who holds her tight, while Lassie smothers him with kisses. She’s finally home. ==Cast==