Helena O'Reillys favorite Christmas Carol is O Holy Night. But the night is a far cry from being divine.
Accidents happen all the time during the holidays and they seem to take a heavier toll than off-holiday season murders. Loosing her grandmother would have been hard anyways, but since the guilty party is nowhere to be found Helena is even more devastated at the lack of justice and loss of peacefulness that is supposed to be resonating within her at this time of year.
Believing the local authorities are not doing enough, she enlists the help of the pop stars Niall Horan (who lost his grandfather) and his buddy Liam Payne who were both witnesses and willing to help.