Leonie was in love and engaged. But now she has fled her beloved Dublin to start again - somewhere no one knows her or the secret she's running from. Settling in to her new apartment she happens upon a bundle of love letters, all written by a man called Nathan to an unknown woman, and all intriguingly ending with the same three words 'Please forgive me'. Moved by Nathan's heartfelt words, Leonie sets out to uncover the mystery behind the couple and what went wrong between them. If she reunites the letters with their rightful owner, might the love of Nathan's life find it in her heart to forgive him? And along the way, Leonie might just resolve a few forgiveness issues of her own ...