A Crystalline Prophecy - Ode to Life Bestowing  

One day, a giant crystal appeared in the skies above Jeuno, triggering a series of unexplained happenings across the land.

Now, adventurers will set forth to unravel the mysteries of this primordial crystal that holds the secret of Vana'diel's past. -Square Enix

ACP: The First Scenario Expansion

A Crystalline Prophecy - Ode of Life Bestowing, released March 22, 2009, was the first add-on scenario expansion produced for Final Fantasy XI. It was one of three scenario expansions planned for release in 2009.

While other expansions introduced new areas and activities for adventurers, the ACP scenario expansion included only new missions and storyline cutscenes. Before its release, the FFXI development team projected that hardcore players would need roughly two weeks to complete the expansion. However, many players finished ACP within a day of it being released, and many others finished it soon after.

Final Fantasy XI Wikibase™