Researchers from Morgrave University have identified several Planar Eyes, magical artifacts of great power. Find and contain the Eyes before they fall into the hands of the mysterious Cult of the Hidden Hand.
The Peril of the Planar Eyes adventure pack was introduced in Update 49.
Quests can be found in Lordsmarch Plaza.
The prologue Free To Play quest The Promise of Fire can be found in the Searing Heights.
Peril of the Planar Eyes story arc is bestowed by Burwick Borley. After completing all of the quests (and turning them in), in any order, he will give an end reward for the entire chain.