"Talk to Storn" is an objective in the main/side/misc quest "The Fate of the Skaal" in Elder Scrolls V: Skyrim - Dragonborn.
Walkthrough[edit]
Return to the Skaal Village and talk with Storn Crag-Strider. He can be in the Shaman's Hut or just wandering about the Village. Talk with him to conclude the quest.
He will notice the change and thank you for your efforts. This will begin the next two quests: Cleansing the Stones and The Path of Knowledge