"I Want a Dog for Christmas, Charlie Brown!" centers on Rerun, Linus and Lucy's lovable but ever-skeptical younger brother. It's Christmas vacation, and as usual, Rerun's big sister is stressing him out, so he decides to turn to his best friend, Snoopy, for amusement and holiday cheer. However his faithful but unpredictable beagle companion has plans of his own, giving Rerun re..