It's dragons to the rescue before the Face devices can siphon all magic from the continent. But even as one crisis is averted, there's still the final battle between Igneel and Acnologia, as well as the reappearance of another well-nigh omnipotent foe.
To keep Dragon Slayers from 
transforming into dragons...
...لأجل أن تمنعوا قاتلي التنانين من التّحول إلى تنانين