Faced with an empty nest when her only child, Josh, goes to university, the flaws in Grace’s twenty-year marriage to Cal are sharply exposed. He is much older than her and she wonders what they have in common, other than their son. She takes up fly-fishing (Josh’s favourite pastime) to escape the taut atmosphere at home, and develops an unlikely friendship with David Gill, her charming millennial instructor. But as she glimpses a future with Cal, devoid of intimacy or excitement, she is drawn into an affair with David. Her mid-life sexual awakening confirms her decision to leave Cal, but while she is finding the courage to tell him, Josh discovers her secret. The fallout has fatal consequences, and Grace realises that in order to rebuild her life and relationships, she has to make peace with the hurt she has caused those she loves most.
