A new girl is expected at The Woodlands, a boarding school in a beautiful Welsh valley. Nobody has met her before, but the Woodlands girls are sure she must be very exciting - after all, she comes from a huge farm in New Zealand, where she has two horses to ride!

But when at last Rona arrives, the other girls are in for quite a shock. She just doesn't fit in at all at first, but gradually she begins to make friends. Then a pendant is stolen, and Rona seems to be the chief suspect!