What's your secret? After twenty-five years four friends - Evie, Gaby, Laura and Anna - think no one knows them as well as they know each other. But on their annual weekend away they discover how wrong they were. This year everything turns upside down. Will the secrets they reveal mean the end of their friendship? Examining some of the troubling social issues of our times, and their spiralling effects on relationships, One Weekend poses the question...How well do you really know those close to you? As the four friends discover, the answer is not nearly as well as they think.