For Fiona and Con, the past is seeping slowly into their present. She is still haunted by the devastating fallout of a long-ago love; he is distracted by thoughts of the enigmatic Kirsten, and is beginning to experience odd gaps in his memory. As a couple, the contentment of married life and the love they have for their children still hold them together, but the ties are beginning to fray. Then a terrifying diagnosis sends them both spiralling, their past coming to meet them ever quicker, even as each tries to push it away.
As the story of their marriage unfolds, journeys and songs feature in blurred scenes of passion and anguish: a tryst in London, darkness in Mississippi, the single, ordinary moment when their lives changed forever.
Can we ever really know the person closest to us, or are we forever destined to be a mystery to each other?