Classic Lassie adventure. When, after years of prospecting, Jonathan (Paul Kelly) finally strikes gold he returns to town only to discover that his partner has since died and left his son, Tommy (Gary Gray), fatherless. He decides to leave Lassie (Pal) with the boy to cheer him up. In the meantime, Jonathan's new partner, Lin (Bruce Cowling), wants the gold for himself, and tries to lure Jonathan to his death. Can you guess who'll save the day?