Modern Londoners Freddy and Cleo have just secretly divorced, convinced they're better off as best friends. But their amicable split takes an unexpected turn when Freddy's parents, Marty and Julie, and Cleo's mother, Rose, surprise them with the honeymoon of their dreams in Italy. The catch? The whole family is coming along. As the clan descends on an idyllic vineyard outside Rome, long-buried secrets, unexpected attractions, and increasingly tangled loyalties threaten to unravel the entire holiday.