When Allegra North parted from first love Francis after a decade together, she poured all her regret into a letter. He didn't reply. A year later, her job brings her back to the beautiful Devon coast where romance first blossomed and she hopes that they can start a new chapter. A family crisis fans the old flames from the start and sparks fly when a chance encounter makes Allegra question whether Francis was ever really on the same page. As summer storms circle, the exes juggle rebellious parents, vengeful family members and a very reluctant celebrity author who holds the key to everybody's future. Just when Allegra thinks she can't blot her copy book any further, she finds herself held to ransom by her own love letter. Should she read between the lines, or is the writing on the wall?