A lost girl. A mysterious house in Ireland. An invitation that changes everything. Twenty years ago, at the end of a hot long Irish summer, three sisters walk down to the cool lake at their home, Swan Hall. As Maeve and Aisling watch their beautiful younger sister Nuala laughing and splashing, it is hard to hide their envy of her. But later that morning, when Nuala drowns, they are devastated. Now, as Iris scatters the ashes of her beloved mother Aisling onto the golden leaves of Central Park, she feels very alone.

Mairead's world is falling apart. Recently separated, she has returned to her beautiful childhood home in Ireland to nurse her dying mother. But as Brigid sits pale and papery thin, looking out over the Atlantic Ocean, she has one last request for her only daughter. Brigid hands Mairead a stunning turquoise necklace and a small black-and-white photograph of her mother, Ellen, a woman she never met. She begs Mairead to go to New York, the last place Ellen was seen alive, and find out what became of her. Mairead cannot ignore her mother's dying wish.

When Lily married her soul mate Connor, buffeted by the sea spray and wild winds of her coastal homeland in Maine, she never imagined she’d be planning his memorial just three years later. Connor has been lost at sea in the bleak, stormy Atlantic, leaving Lily heartbroken. But as she prepares to say good-bye to Connor for the last time, she is shocked to discover a message to him that he never told her about.

Journalist Sadie is home for the first time in fifteen years, staying in her small childhood bedroom as she deals with her estranged father’s death and her surprising inheritance. When Sadie meets Rebecca, the reclusive new owner of the solitary cottage at the edge of nearby Whisper Lake, she’s taken aback by the older woman’s request for help: ‘I need to find my family. Will you help me?’. She’s even more surprised when afterwards, Rebecca acts as if she never made the plea.

Emily Feeney has always loved the festive season, so when she invites some of her favourite people to Christmas dinner at her restaurant, she has an afternoon of delicious fare and seasonal fun in mind. But as the big day draws near, her plans start to look a bit uncertain. Her partner Bill is preoccupied by family worries, and both he and Emily have been skirting around a big unanswered question. When events finally force Emily to issue an ultimatum, Bill must choose between the two women he loves.

Tress Walker waved her perfect husband Max off to work, with no idea that she was about to go into labour with their first child. And completely unaware that when she tried to track Max down, he wouldn’t be where he was supposed to be. At the same time, Max’s best friend Noah Clark said goodbye to his wife, Anya, blissfully oblivious that he would soon discover the woman he adored had been lying to him for years. And living alongside the two couples, their recently widowed friend, Nancy Jenkins, is getting ready to meet Eddie, her first true love at a school reunion.

When Georgie, Iris and Nola's mother died and their father disappeared into his grief, the sisters made a pact: they would always be there for one another, no matter what. Now, decades later, they haven't spoken for years and can barely stand to be in the same room. As his health declines, their father comes up with a plan. In his will, he states that before they can claim their inheritance, they must spend six months living together in their childhood home in the village of Ballycove, Ireland, and try to repair their broken relationships.

May O'Callaghan has decided that life's too short and she's decided to throw in the towel in her predictable nine-to-five job. Now what? As May fits into her new life we meet her friend Pam and her husband Jack - but why is Pam terrified to tell Jack that she's pregnant? And then there's Denis and Bernard, May's next-door neighbours, going about their business oblivious to the deadly threat that lurks close by. There's Paddy, who lives on his own yet never seems to be at home.

Postwar Paris is alive with optimism, but lavender keeper Luc Ravens and his love, Lisette, remain haunted by the horrors they have endured. Casting their fate to the winds, they set sail for Australia, hoping to rebuild their lives in a land that's full of promise. But trouble has a way of catching up with them.

When Elizabeth's husband dies, leaving her with crippling debt, the only person she can turn to is her friend, Jo. Soon Jo has called in her daughter, Lucy, to help save Elizabeth from bankruptcy. Leaving her old life behind, Lucy is determined to make the most of her fresh start. As life slowly begins to return to normal, these three women, thrown together by circumstance, become fast friends. But then Jo's world is turned upside down when she receives some shocking news. In search of solace, Jo and Elizabeth find themselves enjoying midnight dips in the freezing Irish Sea. 

Welcome to Ballycove, the home of Corrigan Mills... Set against the backdrop of the beautiful Irish countryside the famed Corrigan Mills are run by the seemingly perfect Corrigan family, but every family has its secrets, and they don't always stay hidden. Ada has forever lived her life in her sister's shadow. Wanting only to please her mother and take over the family business, now Ada has to take a look at what her heart really wants. Callie has a flourishing international career and a man who loves her dearly, she appears to have it all.

After ten years of loyal service, Daisy Butterworth has been made redundant. Like any clever woman, she knows the cure to redundancy is a little too much wine and her best friend. Only the next morning, Daisy has more than a hangover...she has a whole new house—in France! Seeing this as an opportunity instead of a disaster, she’s excited about finally moving to France, just as she and her husband always dreamed of. However, Daisy is in for another surprise. Despite planning to move there for over 20 years, her husband never actually intended to go.

Classic forgetful Emma—she’s done it again, this time accidentally ruining a Valentine’s Day surprise for her best friend Mel. Desperate to make up for it, she promises Mel a birthday trip to Edinburgh—a girls’ weekend to end all girls’ weekends. There’s just one massive hitch… Emma has already promised her grandma that she’ll go on a coach trip with her to scatter her grandad’s ashes…In Edinburgh. On Mel’s birthday weekend. Oh God.

After escaping her controlling husband, Bernadette Manson is taking the first extravagant holiday of her new life. But when her best friend cancels, will she be strong enough to fly solo? Tadgh Donovan is about to jet off to his destination wedding when he sees a shocking text. Has his bride-to-be written her wedding vows… or already broken them? Hayley Ford is the wife of a top fertility specialist yet her battle to get pregnant has almost broken her marriage. Can a trip to the sun heal their relationship or should she brace for a crash landing?

When Liv Latimer says goodbye to her colleagues and finishes work for the holidays, she's looking forward to a Christmas to remember with her boyfriend Eddie. But before she makes it home, her phone rings, calling her back into work. And Liv is faced with a choice. Does she do as she's always done, and put herself second? Or, will she say no, so she can finally begin the life she's dreamed of? Liv's decision will turn her world upside down in ways she could never have imagined. Because whatever choice she makes, Liv is about to discover, fate finds a way...