Pathfinder 1E Trying to make a Kirin/Herensugue campaign, and advice would be great

[Koothann]

So first campaign the group found a ship that had crashed, they learned that there were evil drow inside. Then after they faught some sea creatures they returned with plunder. 2 crates of plunder that i have not told them what it is!
Plan for the Campaign is to introduce them slowly to the Kerin and there quest to destroy all Herensugues. So they can return to their realm.
Also going to the Isle of terror to scour the island for the Herensugue, And since the Isle of Terror is filled with Drow, and striders that is the link to the Boat. But also trying to find a link to the Kirin or the Herensugues here as well.
Any ideas plz let me know and any ideas for the carg that they found would be great!

 

[Dragon's Lair(Italy)]

Am I wrong or this is the introduction of the "storm of Zenith" in the game Neverwinter nights 2(the carg part)? I think, if you didn't know this, to watch it . Also please said the level of the CS, or else we don't know how much to "forge" the items

 

[Koothann]

Not sure what the CS meansbut we have 5 level 5 caracters in the game and i am wanting to forge an item that will lead them to the isle of terror!!