Wheelie World is a land inhabited by the Wheelies. Long ago, this land was full of happiness and laughter, but then the wicked witch Fenella arrived, and set up home in Spout Hall - a kettle - on the outskirts of the Wheelie Kingdom. Evil Fenella then cast her spell and the colour faded from the land, all the laughter was silenced and the Wheelies became sad and dejected. Until one day a large, brightly coloured egg arrived and from it emerged a strange and wonderful creature - Chorlton, The Happiness Dragon. This happy fellow brought back joy and laughter to Wheelie World, and now, Fenella spends her time trying to defeat and destroy the happiness that Chorlton radiates to all in Wheelie World.