The holidays have arrived, and Richmond is bustling with activity. For the Reid family, however, this Christmas looms as a painful reminder of the accident that changed their lives forever one year ago.

The story opens on Christmas weekend with teenager Scott Reid working his part-time bag boy job at the local Food-Krops Super Market. That afternoon, Scott notices an elderly man sitting outside in the blustery cold, reading a book for hours.

Concerned, Scott approaches the man to offer help. He soon learns that the out-of-town stranger—who dresses in clothing from the same era as his 1949 vintage Packard automobile—calls himself Zachery. Zachery explains that he was passing through when his car “just up and quit running.”

Not wanting the man to be stranded during the holiday weekend, Scott invites him home for dinner. Once their guest arrives, unexpected events begin to unfold, leaving the Reid family wondering if more than mere chance brought the stranger to their home.

As the weekend progresses, the Reids are challenged to “build a bridge” with the man responsible for hitting their daughter while driving under the influence—a tragic accident that left 9-year-old Jenny in a coma.

The story reaches its climax on Christmas morning when the Reids discover that their guest has mysteriously left in the middle of the night. It is only then that they uncover the true identity of their special guest—and the miracle he leaves behind.