Looking For A Certain Movie?

Hey guys. Long time answerer, first time asker. I’m looking for a movie. but i dont know its name, so im in a bit of a pickle, but heres to the best of my memory how it goes.
Ok first off, its a young male, maybe 13-14, he goes away from his village for the day, and in the village some mist comes and in the mist is like an army, and they kill everyone. He comes back and finds everyone dead. I forget what happens next, but he goes to a magic school, and now i will tell you NO ITS NOT HARRY POTTER. Now the thing he learns at this magic school is if you know the true name of something, you can control it. He becomes much too good for the school, as in skill, and he is expelled for using shapeshifting, which for some reason isnt allowed at the school. He then goes on some… quest. I have no idea what for, but i remember him meeting a darker side of himself and battling it in a river, anyway at the end he saves the day blah blah blah. Just want to watch it again. Help me out!