|First Serpent Lieutenant Fulke has assigned you the daunting task of vanquishing the primal Ifrit, a mission intended as an overture to establishing a three-nation alliance. You must first seek out an elderly Elezen man named Louisoix, who is said to hold the secret to defeating the Lord of the Inferno. Find him at the Apkallus Falls, and pay heed to his every word.
You have met and spoken with Louisoix at Apkallus Falls and learned that he presides over a fellowship called the Circle of Knowing. According to the wizened Elezen, the primals are draining the land of aether. They must be vanquished, lest the power of the crystals be exhausted and Eorzea reduced to a barren wasteland. For the first step, Louisoix requires that you put down the six mighty beasts identified below, and obtain the echo crystals they yield. More will be revealed once you have accomplished this task.
Eastern La Noscea:
You have successfully obtained the six echo crystals, one for each of the elements. Make haste and report back to Louisoix at Apkallus Falls in Gridania.
Employing his magicks, Louisoix has merged the six echo crystals to create a harmonizing crystal, an object that grants the bearer entry into the Bowl of Embers, Ifrit's sanctuary. However, in order to summon forth the primal, you must first obtain the Inferno Flambeau. The sacred relic is said to be in the possession of the Amalj'aa Voidtongue Ahzabb Chah, who can be found within a cave situated south of Nophica's Wells in western Thanalan.
You have relieved Voidtongue Ahzabb Chah of the Inferno Flambeau. Make haste and report back to Louisoix at Apkallus Falls in Gridania.
You are now ready to confront Ifrit. Make whatever preparations you deem necessary, and then speak to Louisoix once more.
You have defeated Ifrit despite overwhelming odds. Your celebration is cut short, however, by the unexpected appearance of Legatus Nael van Darnus of the Vilth Imperial Legion. He proceeds to issue a grim warning concerning the coming of a crimson star which will purge the land of life. Make haste for Gridania and relay to Louisoix all that has transpired.
Upon returning to Gridania, you learn that your victory over Ifrit was only fleeting. To compound matters, the likelihood is high that the primal has absorbed the aether that spilled forth from the land, rendering him stronger even than before. With the aetherial gate leading to the Bowl of Embers permanently severed, Louisoix must search for other ways to deal with Ifrit. In the meantime, make your way to the Adders' Nest and report these developments to First Serpent Lieutenant Fulke.