Everyone knows Cassie and Henry are meant to be together. Even Cassie's ex-husband Gil knows it. She's got a smile on her face and a Tiffanys ring on her finger and all that's needed is a date to get to the 'I do's.' Only, Cassie's Vintage Catering business is booked for every Ascot for the next five years, she won't commit to a mortgage on a place together and she's spending more time helping her friend Suzy plan other people's weddings than her own. In fact, her girlfriends are beginning to wonder whether her year of independence, spent getting over the breakdown of her marriage, wasn't just a little too successful. Suzy and Henry's wild and younger cousin, Gem, has no such hesitations. Love has gathered her into its embrace and she's heading to the aisle at a sprint, determined to marry her new man in the Cornish church where her parents were wed. But Cassie notices fault-lines in the relationship no-one else appears to see and her friendly advice to think twice spectacularly backfires, leaving her own relationship hanging in the balance. As Henry departs for a jade mine hunt in Africa, Cassie commits to a summer in Cornwall to try to make amends to Gem. She tells herself everyone has to be allowed to make their own mistakes, but when news comes that Henry's disappeared, she realizes she's made one of her own - and that a happy ending and Happy Ever After aren't necessarily one and the same.