A summer on her aunt and uncle's farm in West Virgin holds many surprises and rewards for Bess Ridgeway. Despite her cousin Rod's unfriendly welcome (he though was a boy) and his warning to keep away from South Wind, the beautiful silver mare who is also a boarder on the farm, Bess to thrilled with country life. Having learned to ride Puff, she is ready for adventure which begins with meeting Peggy and continues with in hidden caves, discovering treasure, trapping a robber and bet of all -- testing the powers of the enchanter's wheel, deemed capable of performing supernatural . Though Bess wishes desperately to own South Wind, it is her ingenuity in other matters that earns her the right to the mare. Aside from the interesting local legend about the wheel (a legend based on history), this is a routine story with tried and true if backyard elements of suspense.