Donald overhears Grandma Duck talking about how she has lost something that she's had in the family for years. He comes to the conclusion that she's losing the farm and tells it to his nephews. They decide to hold a yard sale to raise money to save the farm, recruiting help from Gyro, Gus, Daisy, Gladstone, Scrooge, and other citizens of Duckburg on the way. When Donald shows Grandma the yard sale, she tells him that she was actually talking about her missing apple pie recipe, which it turned out Daisy had borrowed a while ago. -- The Disney Wiki