Mayor Oki and Geoffrey get competitive. They each want their fizzy water to be OKIDO's one and only favourite. Messy tries to help them both get to the top spot, but things get very fizzy very quickly!

It's the Great OKIDO Cake Off! In his enthusiasm, Messy accidentally ruins everyone's cakes. Will he be able to follow the recipe and bake a cake in time for Gloria's 80th birthday party?