Horace and Hattie hedgehog are the very best of friends. There are so many things they like to do together. One day they come across an interesting something, which hatches to become a caterpillar. They look after the caterpillar and feed it until it makes a cocoon and turns into a butterfly. Horace and Hattie want to be butterflies too – so they eat lots and make a bed of flowers. Can their plan turn them into beautiful creatures too?