Prince Caspian Movie Help?

I own the chronicles of narnia movie and I heard that Prince Caspian is supposed to be even better. I have pre-ordered the movie and was wondering if its any good. I hope that it is worth watching for all ages (p.s. im 26 year old christian male) what is the basic plot please dont spoil it but what do you think about it are you going to buy it? Was it worth going and seeing how much should i have spent on it? thanks for all the help!