Holly returns to her hometown to make a Christmas special before her promotion to a television anchorwoman, but first she must face Satan Claus and horrible childhood memories of him.

Letters to Satan Claus revolves around Holly who, after returning to her hometown of Ornaments as a big-city news reporter, faces off with the demon of her past following a simple misspelling made in her letter to Santa. It's a harmless mistake that summons Satan to kill her parents.