The show features a large green muppet named Mopatop and his red duck-dog-like assistant Puppyduck. Together they run Mopatop's Shop, a shop where you can buy anything you could ever think or dream of. Another main character is Moosey Mouse, a young mouse who lives in the loft above the shop with Father Mouse, Mother Mouse and Meesey Mouse. There's also local deliveryman Lamont the Sloth, neighbor Claudia Bird, and fix-it rabbit Odd-Job Gerald.