Zoé et Harvey sont chacun persuadés qu'ils arriveront les premiers chez eux en prenant un chemin différent. Mais en prenant un raccourci, Zoé se perd...
Joe Carraclough lives with his parents and his dog Lassie in a small town in Yorkshire, England. Lassie and Joe are inseparable. Because they are poor, Joe's father has to sell the dog. But Lassie escapes and returns to the Carracloughs. That's why her new owner takes her to his estate in Scotland. But she also runs away from there.