Jack has had enough of Nanny, the family goat, always butting him. When Jack trades Nanny for three stones, Jack's mother is not happy. They need Nanny to make the goat cheese they sell at the farmer's market. Angry, Jack's mom throws out the stones. But the next morning, Jack discovers a huge rock wall has appeared. Jack climbs the wall and his adventure begins. Jack writes in his journal about the realm of a giant farmer and his dog. Find out what happens when Jack brings back giant treasures for his mom to sell at the farmer's market.