Defeat Halion and repel the invasion of the Ruby Sanctum.
This was no reckless attack, but rather a carefully orchestrated strike against the heart of the Red Dragonflight.
Zarithrian, on the bluff over there, is overseeing the assault, but the true leader of this force is a brash and powerful Twilight dragon named Halion. Not since Dargonax has a full-grown spawn of Sinestra's twisted experiments been seen.
Slay him, <name>, and then when the invasion has been fully repelled, report to Krasus regarding all you have seen here.