It's 1969 and free-spirited artist Elin Morgan has left Wales for a sun-drenched Greek island. As she makes new friends and enjoys the laidback lifestyle, she writes all about it in her diary. But Elin's carefree summer of love doesn't last long, and her island experience ultimately leaves her with a shocking secret?Twenty-two years later, Elin's daughter Alexandra has inherited the diary and is reeling from its revelations. The discovery compels Alexandra to make her own journey to the same island, following in her mother's footsteps. Once there, she sets about uncovering what really happened to Elin in that summer of '69.