Donald and his nephews go to the great Greybeard Wood to collect pine cones for Conehead Novelties of Duckburg. Although the limbs of the pine trees are bending with cones, the Ducks strangely do not find many of them on the ground. When even their meager crop is stolen, Donald and his nephews track the mysterious thief and follow him to his hideout. A cave duck from the stone age is hoarding billions of cones in his cave. When the weird cave inhabitant begins to dive around in the cones like a porpoise and burrow through them like a gopher and toss them up and let them hit himself on the head, the Ducks leave. Somebody who is attached to his “treasures” like Uncle Scrooge is not very likely to give away any of them.