When the quest starts, you'll find Xenia and Ariane in a heated disagreement.
Once Xenia flees the scene, Ariane will kit you out with a tracking golem named Kipple. You'll need to tune into to the magical teleportation traces left by Xenia, and follow her trail around the world.
You'll visit a number of locations, completing puzzles or battling guardians at each one, uncovering long-lost secrets of the elder gods as you do so.
Succeed in tracking down Xenia and you'll earn a chunk of XP, plus a golem follower pet, whose personality will be defined by the choices you made during the quest.
You'll also have set in motion the events of an all-new quest line - one that'll be right at the core of RuneScape's Sixth Age.