The Mermaid S.O.S. team continues its mission to retrieve six magic crystals that will protect Coral Kingdom for another year. But the evil mermaid Mantora is up to her old tricks again, and will do anything to stop them. In these two new adventures, Sophie rescues a dolphin from a very tangled situation, and Holly convinces her friends to investigate a mysterious shipwreck. This adorable series is perfect for every young mermaid fan ready to transition into early chapter books.