He recounts how he visited Sesame Street because he believed Oscar the Grouch would start the official countdown to Christmas.
However, due to his hatred of the Christmas season, Oscar tosses the magical counting blocks into the air and they disappear.
Santa Claus then sings "Believe" with Elmo, Abby, Stiller, Big Bird, Snuffleupagus, Ernie and Bert, Count von Count, Grover, Prairie Dawn, Baby Bear, Telly Monster, Rosita, Zoe, and Cookie Monster.
Elmo's Christmas Countdown marks the ninth time the Sesame Street characters have crossed over into commercial television.
Additional Muppets performed by Pam Arciero, Heather Asch, Tyler Bunch, Stephanie D'Abruzzo, Ryan Dillon, Artie Esposito, James Godwin, BJ Guyer, Andy Hayward, Carmen Osbahr, Patrick Holmes, John Kennedy, Peter Linz, Michael Lisa, Noel MacNeal, Amanda Maddock, Ed May, Paul McGinnis, Tracie Mick, Marc Petrosino, Andy Stone, Ian Sweetman, David Stephens, John Tartaglia, and Gabriel Velez.