It`s early 2008 and the credit crunch is starting to bite. Sam and Laura Diamond - and their friends - are circling forty and all feeling a lot less certain about life than when they first met in their twenties. Laura wants to work part-time and have a third child - an appalling prospect for her husband Sam, whose secret ambition is to give up his job as a struggling scriptwriter and have a vasectomy. Life`s no more straightforward for wild child turned corporate lawyer Janey Dart. Having finally given up on Patrick, the love of her life, she finds herself unexpectedly pregnant and hastily married to a wealthy hedge fund manager who loathes her friends. And Sam`s oldest friend, trendy restaurant owner Jonathan Sleet, is about to hit the big time with a TV series and cookbook, but can`t control his roving eye. So it`s no surprise that back on their organic farm in Suffolk, his once glamorous wife Hannah is finding distractions of her own. Determined to reunite the group, Jonathan brings everyone together for a holiday to celebrate his fortieth birthday. But six friends, two decades of tangled fortunes and an explosive secret from the past make for an unforgettable week.