Prerequisite: Subclass Level 65; Path of a Noblesse, Possessor of a Precious Soul – 1 & 2
Talk to Caradine in Goddard Castle Town. You'll find out the Princess is weak and needs some special items to unseal her powers and break free of a curse. So of course YOU and only YOU can save the princess by getting these items.
You'll first be asked to get some items from the Valley of the Saints monsters, Pilgrim of Splendor (which is actually Shine, its a translation error) and Judge of Splendor (Shine). Teleport to the entrance of the Valley of Saints (from Seven Signs priest), or run there. From the entrance, run into the valley and to the right (southeast). Go up top across a bridge. Turn right. You'll find Pilgrims of Shine here. They're a group monster, and all three monsters nuke. Kill a bunch until you get the quest item you need.
Run around up top until you find the Judges. Again, all three monsters nuke. Kill them until you get the quest item you need. Neither are last hit.
Bring the items back and you find you need a third one. To get it you have to kill the princess' nemesis, a level 70 raid boss in the Valley of Saints called Barakiel (its splendor/shine something or other but there are typos aplently so its hard to tell what its real name is beyond something Barakiel). He's all the way to the northeast in the Valley of the Saints. Follow the yellow thumbtack. You'll see what looks like a translucent wall. Go through it to see the raid boss. Kill him. If you are strong, you can solo him. If you aren't, get a bunch of people together who need the quest. Only the people in the party who gets last hit on the raid boss will receive the quest item.
Once you have the item, return to the NPC who sent you there. You then get to sent to IT. Hooray you saved the princess! And you'll get experience and a letter to start the fourth and final Noblesse Quest. You are almost there. Now you just have to hit 75 on your subclass!