Jo and John's marriage has been stalled for years. But they carry on, outwardly together while inwardly drifting further and further apart. Then the unthinkable happens. John is diagnosed with a terminal illness, and Jo is overcome with sadness and regret. There just isn't enough time to rebuild their relationship, to fall in love again. But then a mysterious stray dog enters their lives. And she brings with her that most wonderful and rare gift: a second chance.