Dark Puppet

Talk to Cid and he makes comments about the Darksteel Formula you found from doing Dark Knight AF1. Raibaht then comes up and says that Zeid sent a letter to Cid. Zeid's letter to Cid reports him finding one of the weapons forged by Gerwitz, the legendary darksteel smith...but it has taken the form of an evil weapon. You must meet Zeid and help him with his task.

At this point, if you're going to go do the quest, make sure to bring a Darksteel Ingot with you.

Note: All Dark Knights in your party can do the quest at once, so if you have 5 that need to do it, they can all pitch in and get 1 Darksteel Ignot.

Go to Ordelle's Caves and as you zone in you'll get a cutscene where Zeid comes up to you and tells you that a merchant who had been in the caves was attacked by Gerwitz's Axe. At the time he was carrying a Darksteel Ingot for synthing and you should check it out.

On the first map (the one you are currently on) go to H-12 and fall down the hole. This will put you on a ledge at H-12 on the third map. You should be right next to a ??? in the corner where you fell. Buff up and get ready.

When you're ready, trade the Darksteel Ingot to the ??? and Gerwitz's Axe will spawn. It is around level 50, but not too hard. He uses Mighty Strikes. He will then drop Gerwitz's Axe. Have the Darksteel Ingot user lot on it and get into his inventory.

After this, go east and you will find a passage way leading up onto the second map of Ordelle's Caves. Make your way down to H-8 and you'll find another ???. When the party is ready, trade Gerwitz's Axe to the ??? and it will spawn Gerwitz's Sword. This will cause Gerwitz's Sword to drop.

The final ??? is in H-10 on the same map in the small square room at the south end of the map. When you're buffed and everyone has 300% TP, trade Gerwitz's Sword to the ???. This will spawn Gerwitz's Soul, a Ghost NM around level 54.

Congratulations! You're done! All you have to do is take the exit to La Theine Plateau from the same map at G-10 and you'll get a cutscene between Gerwitz, yourself, and Zeid. When the scene is over with you'll receive your Chaos Sollerets!