After 26 years of marriage Lily and Charlie separate. Lily moving on with her new fiancé Joe, and Charlie, with his new, younger, girlfriend Chloe. Even Lily and Charlie's grown-up children Polly and Thomas have come to terms with their parent's new lives. But when Lily's mother dies, Lily and Charlie decide to get the family together for one last weekend in the old family summer home - a weekend that just happens to be their 30th wedding anniversary. As the whole family gathers with their respective partners, home truths come out and secrets are divulged. By the end of the weekend, everything will have changed - but for better or for worse?

When Chef Emily is left at the altar in front of her family and friends, she swears off love and instead throws herself into her new business: a restaurant with a difference. There's only one communal table, designed with the single diner in mind. Now it's two years later, and with her business thriving with regular customers, romance is still the last thing on Emily's mind - until she receives a letter from her ex who is returning home from Canada with a burning question for her.... 

It's their 20-year school reunion but the Plunkett sisters have their own reasons for not wanting to attend. Caroline, now a successful knitwear designer, spends her time flying between her business in England and her lover in Italy. As far as she's concerned, her school days, and what happened to her the year she left, should stay in the past. Eleanor, meanwhile, is unrecognisable from the fun-loving girl she was in school. With a son who is barely speaking to her, and a husband keeping a secret from her, revisiting the past is the last thing on her mind.

Another summer is in full swing on the island of Roone, and preparations are underway for a big birthday party at the local hotel. But beneath the air of celebration, many of the islanders have their own struggles to contend with. Imelda, isolated by her recent heartbreak, has no memory of accepting a month-long bed and breakfast booking, but when a stranger turns up on her doorstep looking forward to his stay, she has little choice but to take him in.

Nell Mulcahy grew up on the island, so when the old stone cottage by the edge of the sea went up for sale, the decision to move back from Dublin was easy. But when Nell decides to rent out her cottage for the summer to help raise money her forthcoming wedding to Tim, she's unprepared for what's about to happen. As she welcomes holiday-makers to her cottage, Nell must face some truths: about her upcoming wedding to Tim and her friendship with his brother, James. And, meanwhile, her father delivers some astounding news which leaves Nell, her mother and the island reeling.