Topsy’s having a 'Shake and Bake' party and the Bananas have made her favourite apple pie. But Pedro the pig loves apple pie too and when he sees it cooling on the Bananas' window sill, he can't resist having just a little taste. Before he knows it though, he's eaten the whole thing! Pedro tries replacing the apple pie with a mud pie but one taste and the Bananas know it's not the real thing. Now they have to find out who ate their pie and make another one in time for the party.