An elated Pinkie Pie is planning the biggest and best "birth-iversary" party ever for Rainbow Dash, but when another party planning pony named Cheese Sandwich rides into town, plans change. Soon, everypony is so excited about Cheese Sandwich's party that they forget about Pinkie Pie, but her pride won't let her go down without an official "goof off."
Elenco: Tara Strong , Andrea Libman , Ashleigh Ball , Tabitha St. Germain , Cathy Weseluck , Michelle Creber , Claire Corlett , Madeleine Peters , Nicole Oliver , Peter New , Brenda Crichlow , Chantal Strand , Shannon Chan-Kent , Brian Drummond , Rebecca Shoichet , Kazumi Evans .