Lucia, an attractive waitress from Madrid, hears on the phone that her boyfriend Lorenzo has been killed in an accident. Lorenzo wrote books somewhere on an idyllic island in the Mediterranean. After the accident, the desperate Lucia decides to go to the island. There she meets Elena (Najwa Nimri, from Los amantes de circulo polar) and Carlos (Daniel Freire). Lucia does not know that they both knew Lorenzo. Elena also had a relationship years before with Lorenzo: she spent one romantic night with him, but couldn't find him when nine months later she had a child: Luna. But Luna is no longer alive. Lucia slowly starts to find out more about the past of Elena and Carlos, and she is reminded of the subject of a book that Lorenzo wrote before she met him. Reality and fiction start to get mixed up.As we have been led to expect from Medem (Vacas, Los amantes del circulo polar), Lucía y el sexo is visually overwhelming. Chance, nature and the elements (in this case mainly sun and water) again play an important role. In the excellent cast, the enchanting Paz Vega in Spain best known as a sitcom star is an excellent choice with her Bambi eyes. And indeed, there is plenty of sex in the film.