After Prince Caspian failed to ignite the box office, Disney dropped the franchise. While co-partner Walden Media got Fox to pick it up again, the comparative failure of the last movie means they’re really selling this one hard. Indeed this if the fourth trailer for the movie, and each has shown off different footage, all of it selling the spectacle and huge amounts of special effects. In fact, even if you’re watched all of them, if you don’t know the book, you won’t have too much idea of the plot. This is probably the most revealing trailer so far on that score, so click below and see what Aslan, Caspian, Lucy and Edmuns will be up to. The film hits cinemas on December 9th.