I couldn't figure it out. I didn't understand. No one did. Why did they burn away? What happened to my wings?

Castiel Novak is the new kid in Winchester High. He's special. Not in a bad way but in an unnatural way. He's an Angel. Dean and Sam Winchester, the Principal's children, are the rulers of the school. Sammy lays back but Dean take advantage. On Castiel's first day, Dean feels something in himself whenever he sees the boy. As Dean is too afraid to find out what this feeling means, Castiel tries his hardest to learn what he has to do to Earn His Wings.