As the Vestal of the Wind Crystal, Agnes became aware of a dark power consuming the crystals throughout Luxendarc. Shortly thereafter she embarked on a quest to restore the power of the four crystals and along the way clashed with opposing Eternian forces.
After her mission is a success, Agnes is inaugurated as the new Pope of the Crystal Orthodoxy. Later, on the eve of a peace treaty signing between Eternia and the Orthodoxy, she is confronted and then kidnapped by the leader of the Glanz Empire, Kaiser Oblivion.
Locked away in the kaiser’s Skyhold, Agnes assists Yew and his friends in their quest by communicating through the shards of a pendant that they both carry.