On Christmas Eve, 1968, Cathy McLean receives a surprise visit from the lost love of her life and is forced to choose between the one that got away and the one that stayed. On Christmas Eve, 1993, Cathy’s daughter Helena is overjoyed to hear that her boyfriend is about to propose, until a devastating encounter threatens to bring her heartbreak instead of diamonds. On Christmas Eve 2023, a shocking discovery rocks Eve Quinn’s world. The only gift Eve wants this year is the truth. But will it take a Christmas miracle to unravel generations of secrets?

Laney Cochrane loves her life. With her friends Millie and Tash, she runs a proposal agency, organising the perfect setting for their clients to pop the question. Finding that forever love is something Laney knows all about. Her marriage to Cameron is blissfully content, and she has never doubted they’ll live happily ever after. Then Cara Deacon walks into their office. When Cara enlists their help to set up a romantic engagement to her boyfriend, they visualise a breathtaking scene under a moonlit Manhattan sky.

This is... Denise. Married to Ray, her first and only love, Denise has never, for one moment, regretted putting the husband she idolised on a pedestal above everyone and everything else. But, after forty years of marriage, he is gone, leaving Denise to discover that their perfect marriage was fatally flawed. Now she faces a future alone. But first, she must face the betrayals of the past. This is... Claire. The estranged daughter of Denise, the woman who put her husband before her children, Claire took the opposite path and devoted her life to raising her family, sacrificing.

Suze has a niggling feeling that her husband Karl's marital sat-nav has taken a wrong turn and led him down the road to temptation. What's a suspicious wife to do? Mel knows that her sweet, docile husband Joe would never, ever cheat. But when Suze, her sister-in-law, hires a honeytrap to test Karl, the results blow Mel's world apart. Mel, Joe, Suze, Karl. They're family. They're friends. And they're about to discover whether or not they can navigate those other f-words - fidelity and forgiveness.

Carly Cooper is 30, single and after coming close to saying ‘I do’ to six different men, she’s wondering if she accidentally said ‘goodbye' to Mr Right. But there is a problem. Her ex-boyfriends are scattered all over the world and Carly lives in 1999: an era before Facebook, Google, smartphones, 4G and Broadband, when it was impossible to track people down with a few clicks of a mouse. On a mission to discover if she walked away from her 'happy ever after', Carly quits her job, her flat, her whole life and sets off on a quest to track down all the men she has ever loved.

Thirty-year-old Dee and her husband Luke are blissfully happy. Every day she makes her loyal parents incredibly proud. Jen has been her best friend since their days of teenage crushes, bad '90s makeup and huge hair. They are just like any other group of family and friends - living life and getting by. Until one day everything changes. Dee is gone, killed by a reckless driver, leaving the people she loved to deal with their grief in different ways. A marriage is rocked as a parent seeks justice. A husband struggles to accept the loss of his wife.

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?

Their rise was meteoric. Only a few years before, they had been three friends from Glasgow, trying to survive in a world of danger and dysfunction. Suddenly they were thrust on to the world’s biggest stage, accepting an Oscar in front of the watching world. That night was the beginning of their careers. But it was the end of their friendships. For two decades they didn’t speak, driven apart by a horrific secret. Until now... Their past is coming back to bite them, and they have to decide whether to run, hide, or fight.

After two decades of looking after others, this is the day that Agnetha McMaster is reclaiming her life. It's her turn, her time, but will she have the courage to start again? Ten years ago, Mitchell McMaster divorced Agnetha and married her best friend, Celeste. Now he suspects his second wife is having an affair. This is the day he’ll discover if karma has come back to bite him. Thanks to a DNA test, this is the day that Hope McTeer will finally meet her biological father. But will the reunion bring Hope the answers that she’s looking for?

Lou Cairney's life has never been dull. But through twenty years of ups, downs and really bad hairstyles, Lou has had the best friends a woman could hope for in Lizzy and Ginger. Growing up together, they shared their dreams and their disasters, broken hearts and career crashes and they survived it all thanks to love, hope, a large dollop of humour and cocktails. Until now; Lou needs her friends more than ever. Her past has just caught up with her in a shocking way.

As the sun rises on a hot summer’s day, four lives are about to be changed forever.... Today, Maisie McTeer decides to track down the ex who jilted her at the altar. Today, she’ll find out that revisiting the past can also rewrite her future. After losing her husband, Harriet Bassett can no longer bear her lonely life. Today, a familiar face in a crowd will spark a quest to discover if there’s something and someone worth living for.

You know that ‘till death do us part’ bit in the wedding vows? Well Zoe Dalton believed it. She walked up the aisle thinking that she was strolling to her happy ever after. One month later, her heart is in pieces, she’s returning the wedding gifts and there’s a husband-shaped space next to her in bed. He’s gone, after Zoe discovered a devastating secret. But Zoe has lost so much more than her marriage. Her three sisters are not only her siblings, they’re her best friends, too. Now she’s discovered that one of them may have been the reason her husband betrayed her.

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.

Sasha has had it. She cannot bring herself to respond to another inane, “urgent” email or participate in the corporate employee joyfulness program. She hasn’t seen her friends in months. Sex? Seems like a lot of effort. Even cooking dinner takes far too much planning. Sasha has hit a wall. Armed with good intentions to drink kale smoothies, try yoga, and find peace, she heads to the seaside resort she loved as a child. But it’s the off season, the hotel is in a dilapidated shambles, and she has to share the beach with the only other occupant: a grumpy guy named Finn.

Cara and Millsy have broken up...sort of. After years of being everyone's favourite couple, always up for a party and having fun wherever they go, things have fizzled out. But when they realise they have a whole calendar of events and celebrations with friends and family coming up, Cara and Millsy can't face letting them down. So they decide to make a pact: just convince everyone they're as madly in love as ever and get through the festivities without causing suspicion, and then deal with the break up in the new year. How hard can it be...?