Stella must accept her destiny when, on the day of her sixteenth birthday, she discovers a secret which will shake the foundations of her peaceful life in a town on the Mediterranean coast. Growing up carries many responsibilities, something Stella will learn about with the help of her friends. She is going to undertake a magnificent adventure, fighting the evil ambition of her enemy who wants only to be powerful and to enslave the sea creatures. There is also a love story unfolding between the pages of this book, motivating Stella to keep on in her mission to find answers in that blue world - which isn't always so blue - of unknown and dangerous waters.