A woman, two days before Christmas, receives a card with a gift voucher, giving her directions to enter a particular book shop , where she will find a gift box which is locked with a combination and she has 48 hours to crack the combination whereby she may deposit any ill event from her past and it will be erased from her life totally, however this does lead to the delema that by erasing any part of her past, her present timeline is changed along with the people she knows, her job, and her home.