Mopatop opens the episode by offering a mop, a plop, and some animal cards to swap. Puppyduck suddenly pops up and wants to swap animal cards with Mopatop. Mopatop notice Puppyduck's pop sounds ploppy. In the attic, Mother Mouse hears the plop noise and wonders what is going on. Moosey Mouse explains it is Puppyduck's pop sound and Father Mouse tells Moosey to get Puppyduck's pop sound so that he can fix it.