Ethan Windfall and the Keepers of the Lost Realm: The Calling

An ancient betrayal... a terrible downfall... an escape to earth...
The citizens of Aragone left their realm after the Great War and took refuge in the mystical school of Haro, but slowly, their safety is dying away as the border between them and the outside world is torn apart. Now, their only hope for survival is the children of their deceased leaders, but there's one problem; the children went missing long before the war began. Plus, they're half mortal, making them weaker than their parents were. Now it's up to these simple teenagers to save the world before Aragone's past repeats itself.