What would you give for a second chance with the one that got away?After a terrible heartbreak, Harriet Cookson worked hard to build her life back up. Now she has a dependable boyfriend, a great job and a decent flatshare. But when her beloved grandmother passes away, Harriet drops everything to fly out to the Hamptons to comfort her grieving grandpa.Christmas is coming and as she arrives on the sandy beaches of her childhood in Montauk, Long Island, Harriet spots someone she never expected to see again - her 'one that got away', ex-soldier Mack Wyatt. Now, Mack is determined to win Harriet back and show her that the life she's been living might be the wrong happily-ever-after.This Christmas, find out if love letters from the past can pave the way to a brand-new future...