Donald has a ride-on sized train layout in his backyard. There's a large tree (home to Chip 'n Dale) that's out of scale, so Donald moves it while they're out; they come back to see their tree moving. No problem; one of Donald's model houses is just their size.
Chip 'n' Dale have filled a hollow tree with nuts. Pluto sticks a bone into the tree, but this triggers an avalanche of nuts - right into Pluto's doghouse. He's not at all happy about them coming after the nuts. Chip 'n Dale hide in a pair of garden gloves and eventually get Pluto to haul his nut-filled doghouse to their tree.
Donald Duck gets into a lot of trouble while he's cooking pancakes for breakfast - Chip and Dale are up to their mischief. Donald tries a number of plans to get rid of them, but they repeatedly foil Donald's plans.