Emily is drawn to this beach, with its sudden roaring tides and sharp rocky headland. She can escape there and forget that her mother has left her with a father she has never known. It is on the beach that Emily meets Margaret and believes she has found a friend. But who is Margaret? Is she really a mermaid, or simply a madwoman to be ignored as the locals say?
What does Margaret's story hold for Emily? To discover herself Emily will have to make a choice, and find out that courage has different meanings . . .