Olive Bower is not on talking terms with Michael Carter. Every time she passes him in the school corridor, she is reminded of his unforgivable betrayal. So when the plane crashes on the way to a school trip in Greece, Olive is understandably disgruntled to discover that she is stranded on an uninhabited island with her ex. But there is a silver lining. And he goes by the name of Elliot Hemingway.