Two decades ago, Adam Sharp’s piano playing led him into a passionate relationship with Angelina Brown, an intelligent and strong-willed actress. They had a chance at something more --- but Adam didn’t take it. Now, on the cusp of turning 50, Adam likes his life. He’s happy with his partner Claire, he excels in music trivia at quiz night at the local pub, he looks after his mother, and he does the occasional consulting job in IT. But he can never quite shake off his nostalgia for what might have been. And then, out of nowhere, from the other side of the world, Angelina gets in touch. What does she want? Does Adam dare to live dangerously?

The Chemin, also known as the Camino de Santiago, is a centuries-old pilgrim route that ends in Santiago de Compostela in northwest Spain. Every year, thousands of walkers follow the route that wends through quaint small villages and along busy highways alike. Zoe, who’s still reeling from her husband’s sudden death, has impulsively decided to walk the Camino, hoping to find solace and direction. Martin is road-testing a cart of his own design and recovering from a messy divorce. Strangers and circumstances force Zoe to confront not just recent loss, but long-held beliefs. For Martin, the pilgrimage is a test of his skills and endurance but also of his willingness to trust others --- and himself --- again.

The Wife Project is complete, and Don Tillman and Rosie Jarman are happily married and living in New York. But they’re about to face a new challenge because Rosie is pregnant. Fortunately, Don’s best friend, Gene, is on hand to offer advice: he’s left Claudia and moved in with Don and Rosie. As Don tries to schedule time for pregnancy research, and getting Gene and Claudia to reconcile, he almost misses the biggest problem of all: he might lose Rosie when she needs him the most.

Don Tillman, a brilliant yet socially challenged professor of genetics, designs the Wife Project to find his perfect partner: a 16-page, scientifically valid survey to filter out the drinkers, the smokers, the late arrivers. Rosie Jarman is all these things. But while Don quickly disqualifies her as a candidate, as a DNA expert Don is particularly suited to help Rosie on her own quest: identifying her biological father.