You're never too old to believe . . .

After losing her job, boyfriend and flat just a few weeks before Christmas, Ellie Lancaster makes some resolutions: 1. Exact revenge on ex. 2. Be unboring. 3. Find a job.

With #1 complete, Ellie manages to tick off #2 and #3 simultaneously by accepting a mysterious archiving job on a tiny Scottish Island that doesn't seem to exist on any map.

In the new year, her equally new bosses - celebrity baker Clementine Jones and her straight-laced twin brother Cole - introduce Ellie to the archives: a vast network of underground caverns, filled with scrolls dating back centuries, each addressed to the same person, in a multitude of languages: Dear Father Christmas . . .

Despite the strangeness of it all, Ellie quickly falls in love with the island and her life there - but life is never simple, and just as she and Cole seem to be overcoming their mutual distrust, Ellie makes a fourth resolution - one that threatens everything she's come to hold dear. As the big day itself draws near, she has one chance to put things right and bring about her own Christmas miracle . . .