In 1937, seventeen-year-old Ella's life changes forever when she is sent to spend the summer on the beautiful and windswept Ile de Re and meets the charismatic, creative Christophe. They spend the summer together, exploring the island's sandy beaches and crystal-clear waters, and, for the first time in her life, Ella feels truly free. But the outbreak of war casts everything in a new light. Ella is forced to return to Scotland, where she volunteers for the war effort alongside the dashing Angus. In this new world, Ella feels herself drifting further and further from who she was on the Ile de Re. Many years later, Ella asks her granddaughter Kendra write her story down, before she forgets....