Chocolate milk, Marshmallow. Muffin. Cupcake. Long ago, the four nations lived together in harmony. Then everything changed when the Muffin Nation attacked.
Oh don't be like that, Derpy would make a great FireLord! In fact she would make such a great FireLord that the FireMuffin Nation should conquer the rest of the world so they can live under her wonderfully Derpy rule!
Sorry? You better be! How could you doubt our glorious Fire Lord? You are not worth to eat the muffin crumbs below her throne! NOW GO! And prove yourself by defeating those cake loving Airbenders!