Lucia, a young waitress in a restaurant in the heart of Madrid, takes refuge in Formentera, a quiet and clear Mediterranean island, after learning about the disappearance of her boyfriend, a writer she had lived for six years. There Lucy meets Carlos, a scubadiver, and Elena, his girlfriend. Exposed to a glowing atmosphere, Lucía begins to review the darkest corners of her past, as if they were passages of a novel whose author, from a distance allows her to read.