The video above is the The Witcher 3 Wild Hunt Echoes of the Past Main Quest Walkthrough and shows how to complete Echoes of the Past, the quest featured in The Witcher III: Wild Hunt.
The video walkthrough covers the following objectives:
Meet Yennefer at the site of the magic cataclysm.
Talk to Yennefer.
Help Yennefer kill the foglets.
Follow Yennefer (4).
Use the Mask of Uroboros (4).
Look for a body.
