Cure for Fever Disease

I am Elias, a teacher at Einhovant's School of Magic. Some time ago, my students and I went on a field trip to the northern part of the island to collect herbs needed for class, and many of the students fainted after catching a strange fever. It has been a week since they fell ill, and we still have not found a cure. I'm worried out of my mind when I think that my students might die from this.

Thankfully, Priest Yohanes thinks he might have a remedy. Won't you find me some medicine ingredients for my young students who are dying? I truly need your help. That ingredient is the Giant Spider's Poison Sac, but I believe that someone like you can easily obtain it.

I can't thank you enough for your help. The giant spiders abound in the northern parts of the island, so hunt them and bring back their Poison Sacs.

Once you have obtained the Poison Sacs, go to Priest Yohanes. He will create a Fever Medicine from the Poison Sacs. Bring the medicine back to me.

If one of my students should die, how will I ever face their parents? I just want to run far, far away. I implore you, please find those Poison Sacs. My students are dying!