Mia is actually looking forward to spending Christmas in Genovia - because Lilly and Michael are coming too, for their first-ever visit! But from the moment she arrives, Lilly is a royal pain in the butt. And Grandmere is insisting Mia dance with Prince William at the Christmas Eve Ball (as if she can do That with her one true love watching!). Oh, and speaking of Michael - his truly amazing Christmas present hasn't even arrived yet! This is So not the very merry Christmas Mia had in mind...