Joe and the Lightning Pony

'At the word go, Lightning leapt forward like a racehorse let out of a starting stall. It was all Joe could do to hang on as she galloped in and out of the poles.'

Joe is delighted that his pony, Lightning, is brilliant at mounted games. The two of them make a great pair and Joe can't wait for them to try out for the Prince Phillip Cup team. There's just one problem - Lightning seems quite small now that Joe is growing so fast. What will he do when he's too big to ride her? And what will happen to Lightning if she is sold?