The Pony Girls are ready for their first summer at Storm Cliff Stables! Horses, swimming, camp life, and most important, friendships. If she's not riding a horse, Gabriela is reading a book. She has so many, she even starts a lending library at camp! But after she reads a book about Bigfoot, the Pony Girls start seeing signs of the giant creature around camp. Can they set aside their fears and solve the mystery of whether Bigfoot is real?