Pesky flies buzz on a hot summer day at Waterdam Farm. At three months old, Lady Thistle still stays close to Polly as she experiences new adventures-some exciting and others frightening!

Today, the vet arrives and instructs the farmhands how to help keep bugs off the horses and out of their eyes. Thistle is nervous, but under the watchful eye of her mother, Polly, she bravely allows the vet to spray her legs and put a special mask over her head. But the lessons are just getting started; another visitor appears on the farm. He has horseshoes, hammers, nippers and nails! Lady Thistle wants to be grown up...but this looks scary! Join the foal as she faces her biggest challenge yet in another step toward independence.

Based on a true story, this is the fifth book in The Lady Thistle series.