A stunning new adaptation for BBC One, based on the bestselling book by David Nicholls (Author of Us and One Day).Connie (Saskia Reeves) and Douglas (Tom Hollander) are set for a grand tour of Europe. It’s one last family holiday before their only son Albie (Tom Taylor) leaves for university. But just days before departure, Connie announces she wants a divorce. They nonetheless continue with the trip to some of the world’s most beautiful cities – from Amsterdam and Paris, to Venice and Barcelona. Douglas sees this as a make-or-break chance to win Connie back and restore his troubled relationship with their teenage son. As love takes a detour, will Douglas get his marriage back on track?