Donald has a walnut-shaped shop where he makes nut butters. When his supply runs out, he taps the tree where Chip and Dale have been storing nuts. The chipmunks discover Donald's shop and think it's a giant walnut. When they finally break in, they start filching the finished product from Donald, and it takes him some time to notice.
All in a Nutshell
Donald steals Chip and Dale's nuts for his nut-butter shop, which is shaped like a giant walnut, Chip and Dale, roll and "shoot" Donald into a nearby lake.
