Twelve-year-old Joe Carraclough can’t imagine life without his family’s dog and beloved friend, Lassie. The pair are inseparable, from walks home from school together every afternoon to epic explorations of the Yorkshire countryside. Then Joe’s family falls on hard times, and his father is forced to sell their prized collie to the Duke of Rudling.
Joe thinks there’s no chance he will ever see his best friend again. But, Lassie has other plans. Driven by natural instinct and an extraordinary love, Lassie escapes from her new owners and makes a perilous journey back to Greenall Bridge to reunite with Joe. Across hundreds of miles and against staggering odds, Lassie rises to every occasion as she races back to her home . . . and her family.