After joining John Denver for a family sing-song, foiling Ebenezer Scrooge’s humbugging of the festive season, and saving their Muppet Theater, the Muppets are getting set to hop back onto NBC again for the holidays with Letters To Santa: A Muppets Christmas. Kermit, Fozzie, Gonzo, Miss Piggy and the rest of the Muppet gang will be joined by Whoopi Goldberg and Harry Potter regular Richard Griffiths among others in the special, which will feature new songs written by The Muppet Movie and The Muppets’ Christmas Carol composer Paul Williams. Goldberg previously starred in the NBC special It’s A Very Merry Muppet Christmas Movie, but it is unclear if she will be reprising her character or if this is a continuation of that storyline. According to The Hollywood Reporter, Letters sees Kermit and company mistakenly avert three letters en route to Santa Claus, which triggers a race against time on Christmas Eve to bring a happy Christmas to the kids whose wishes were lost in the mail.