The Golden Knights — Andrew Reynolds

In a world that has been devastated, a young boy soon learns that he is meant to save it from destruction. He is to become the leader of the Golden Knights. He keeps meeting trials as he grows up. He makes some great alliances/friends that help him along with his tasks. He learns after a while that he has been lied to by the one of the people he trusts. He vows to never let the world get destroyed.