While quarantining at her family's lake house during the pandemic, Parker and her best friend are threatened by an unexpected visitor.

Mandy, the owner of a craft and hobby store, discovers an old copy of “A Christmas Carol” among donations for a book drive. In the book is a letter to Santa from 70 years ago along with a valuable coin. Mandy sets out to find the owner of the book, letter and coin with the help of Jonah, a contractor who first came upon and donated the book. Along the way, they find clues that lead them closer to the author, and to each other, but can Mandy return everything to the book owner in time for Christmas and make her own Christmas wish come true?