There's a lot going on in this short trailer for Frozen Fever, including a very catchy first listen to the new song's central hook. Though the whole film is only going to be seven minutes long, I don't think we have to worry about a shortage of plot.That footage adds up to over a 17th of the whole film, I believe. I know most trailers feel like they're giving away an awful lot, but nothing comes close to the proportions here. The plot of Frozen Fever is pretty simple: it's Anna's birthday, on the Summer solstice, so there's going to be a big party. Unfortunately, Elsa gets a cold and loses control of her powers. It's just a guess, but it seems like they could be in for some Tribble-style trouble. I wouldn't be surprised to see Elsa sneezing those little semi-formed snowball babies into life. Barring a total disaster, Frozen Fever is bound to be an absolute smash with the huge fanbase of the original. Added to the already high box-office appeal of Cinderella, and I think Disney are about to laugh themselves all the way to the bank. And they might as well stay there, with two Marvel movies over the summer and Star Wars for Christmas. Frozen Fever and Cinderella reach US cinemas on Friday March 13th, and will cross the Atlantic to the UK on Friday 27th.