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.

One year ago today, Tress Walker’s husband was killed in a car accident, on a trip with his secret mistress whilst Tress gave birth to their son. But as time moves on, Tress has to choose whether to protect her fragile heart or open it to love again.

Noah Clark was equally devastated to discover his wife and his best friend were having an affair. Now the love of his life is asking for a second chance. But can there ever be a way back once the trust is broken?

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?

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.

On a cold December morning... Caro sets off to find the truth: has her relationship with her father been based on a lifetime of lies? Cammy can't wait to surprise the woman he loves with a proposal. All he needs is the perfect ring. Lila can no longer hide her secret. She has to tell her lover's wife about their affair. After thirty years, Bernadette knows it's time. She's ready to leave her controlling husband... and never look back.

Have you ever made a life-changing decision before wondering if you made the right one...? When Liv and Nate walked up the aisle, Liv knew she was marrying the one, her soul mate and her best friend. Six years later, it feels like routine and friendship are all they have left in common. What happened to the fun, the excitement, the lust, the love? In the closing moments of 1999, Liv and Nate decide to go their separate ways, but at the last minute, Liv wavers.

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.

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?

After three decades of marriage, Brenda Jones has decided to leave her husband, just as soon as they both return from a mystery trip with their daughter Zara. But she has no idea that Zara is flying them to Las Vegas to renew their vows. Zara Jones has recreated almost every detail of her parent’s original wedding - now her only challenge is tracking down the two friends who were pictured with her mum and dad back in 1993.

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.

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. 

When Tess married Drew Gold, she knew his two ex-wives were still in his life. Now Drew has planned a luxury cruise to celebrate his birthday, and all the former Mrs. Golds are coming too...Drew’s second wife, fashion editor Mona, never puts a Louboutin wrong when it comes to style. Now it's time to reclaim the only man she ever really loved...if she can tempt Drew away from Sarah Gold, his new wife for a second time. When Drew left his first wife, Sarah, for the glamorous Mona, Sarah's emotions went into hibernation. Now she's decided to shave those legs and start living again.... 

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.

An expert at keeping moving, with her trusty motorhome and faithful dog Muffin, Sophie has built her life around keeping her loves and loyalties to a minimum. Fabulous fifty-something Hattie Langford has kept her heart and past safely stored away too. But for reasons she’s only willing to share with a stranger, Hattie needs to tell the story her family has been hiding at Riverbend, their home in Sherwood Forest. There is a history of heartbreak and hurt that Hattie is now ready to face.

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.