Can your final fling become your happy ever after?

When Jo Coulson finds herself single again in her late 30s, she finally resigns her membership to Last of the Hopeless Romantics, fully intending to tackle midlife and motherhood alone. First, she plans one legendary last fling....

In walks Harry Inchbold, and the connection is electric. Passionate, unpredictable and messily divorced, Harry is the perfect antidote to cosy coupledom. Known as The Sinner, drama follows him around with a clapper board.

Harry's favourite holiday hideaway in the wilds of South Shropshire puts the mud and fun into the perfect dirty weekend. But at the cottage, Harry reveals a very different side, melting Jo's resolve. What better combination to face an uncertain future than two cynics who have learned from their mistakes?

Together they make a pact: same time next year; they can promise no more than that. Through life's most stressful decade, Harry and Jo return to the Shropshire hills for one weekend each year to rediscover passion and make peace. As career, family and home crises all threaten to bring them unstuck, the cottage is their glue. Here, different rules apply: the day-to-day world is not allowed to intrude. With Harry and Jo, however, it's only a matter of time before rules get broken. As real life gets increasingly complicated, can they keep renewing their promise?