This is Mr. Henry Corwin, normally unemployed, who once a year takes the lead role in a uniquely popular American institution, that of a department store Santa Claus, in a road-company version of The Night Before Christmas. But in just a moment, Mr. Henry Corwin, ersatz Santa Claus, will enter a strange kind of North Pole, which is one part the wonderous spirit of Christmas and one part the magic that can only be found in the Twilight Zone.