Rosie, Daniel and Serge met at Oxford in the early 2000s. Fifteen years later, they are guests at a lavish three-day wedding in Provence. They are also no longer on speaking terms. Rosie is dreading a weekend around her ex, Serge, and his fiancé, Isla. Serge is hiding a crippling debt --- and a secret separation. Daniel, now a successful actor, is drinking to cope with life in the limelight. And Isla is wondering why motherhood looks so much easier for everyone else. As the champagne flows, historic rivalries and infatuations surface, and old and new secrets emerge. This is a wedding to be remembered, for all the wrong reasons.

It’s Christmas, and for the first time in years the entire Birch family will be under one roof. Even Emma and Andrew’s elder daughter will be joining them at Weyfield Hall, their aging country estate. Having just returned from treating an epidemic abroad, Olivia, a doctor, has been told she must stay in quarantine for a week…and so too should her family. For the next seven days, the Birches are locked down, cut off from the rest of humanity and forced into each other’s orbits. In close proximity, not much can stay hidden for long, and as revelations and long-held tensions come to light, nothing is more shocking than the unexpected guest who’s about to arrive.