Isla is a girl with a huge imagination, who loves listening to her grandad's stories of his childhood in wild and rugged Cornwall. When Isla's dad goes missing on a diving trip in Mexico, her world is turned upside down. Based on the old Cornish folktale The Mermaid of Zennor, this is a journey of curiosity, friendship, mystery and magic.

Have you ever looked out across the ocean and wondered what secrets lie beneath the waves? Are you brave enough to find out? Isla is a girl with a huge imagination, who loves listening to her grandad's amazing stories of his childhood in wild and rugged Cornwall. But when Isla's dad goes missing on a diving trip in Mexico, Isla's world is turned upside down. How did he vanish? Will her family ever see him again? Grieving his loss, and needing a change of scenery from busy London, Isla, her mum and her grandad decide to move back to Cornwall, to the family farmhouse in the tiny village of Zennor. Isla misses her dad, and is not used to country life, but when she discovers a magical secret locked away in an old book, Isla's life takes another unexpected turn, as she discovers that the sea holds more adventures than she could ever have imagined. Based on the old Cornish folktale The Mermaid of Zennor, this delightful tale takes you on an incredible journey of curiosity, friendship, mystery and magic. Are you ready to dive in?