It's Dorothy's birthday on Sesame Street! Elmo is excited to celebrate his friends birthday and he has planned a big birthday party. Abby wants to help, but she has never been to a Sesame Street birthday party before, only Fairy Tale birthday parties! Elmo teaches Abby all about games like pinning the tail on a donkey, playing the piñata game, and opening presents. Then Abby magically takes Elmo on an adventure to Fairyland, where they celebrate...