Linus reminds the Peanuts gang of the meaning of Christmas, in a beloved holiday classic. As Christmas approaches, Charlie Brown is depressed; he confides in Linus, who tries to cheer him. He visits Lucy's psychiatric booth, but she's no help. He tries throwing himself into the pageant, but it only makes him feel worse. Finally, he decides that they need a Christmas tree for their play -- but his selection leaves the rest of the group laughing. Then Linus reads his friends the story of the Nativity, which prompts them to work on decorating the humble tree and exclaim gleefully, "Merry Christmas, Charlie Brown!" The broadcast includes an addition seven-minute short, "Prep & Landing: Operation Secret Santa," in which Lanny and Wayne must find a mystery item hidden in Santa's office.