Defeat Capriton Warriors at the Massacred Scorpion Base. Then talk to Merchant Chase at the GreatHessian Tree. Use your quest tracker to see your progress.
Merchant Chase: To destroy the Capritons, you must first defeat the Merchant Chase: guards of the Chieftain. They are deep inside of the Merchant Chase: Massacred Scorpion Base. NakanoAzusa: I see. Merchant Chase: I also lost many fellow merchants to them. I Merchant Chase: know they were mankind's good friends once, but I Merchant Chase: won't be able to forgive them. HiiragiKagami: Well, they destroyed the Scorpion base! Merchant Chase: Yes, the damage done to the group is serious! NakanoAzusa: Yes, it's where the goods from Cirrugor and Regenshein NakanoAzusa: were traded. It must be an important location. Merchant Chase: Please defeat those monsters who harmed the Merchant Chase: merchants.
Reminder Dialog
Merchant Chase: Be careful. Your life is more important than my revenge.