In Cornwall for the summer holidays, Sophie feeds a Vietnamese pot-bellied pig, stays on a farm, meets some new friends and starts riding lessons. She also learns to swim, encounters an old enemy on the beach and has her first ever horseback ride on Bumblebee, a grey pony: she turns out to be a natural rider. When she learns that riding lessons are very expensive, she is sad to have to stop until next summer – but luckily Aunt Al comes to the rescue…