The Langfords are a perfectly happy family. Louisa and Kip, happily married for nearly 40 years, have raised their children and are now just settling into a new phase of life where they'll have more time for themselves. Everything seems perfect. But then, one Boxing Day after a lovely family Christmas, Kip tells Louisa that their marriage is over. It's not something Louisa saw coming. And what he tells her next is even more unexpected: he's fallen...