Sacred 2:The Last Drop
While walking down the main road of Tyr Lysia, you stumble across a man standing outside of his house with a look of panic on his face. You approach him and ask what's wrong. He tells you that he needs to fetch some wine out of his cellar, but the problem is that the place is infested with ghosts and he's too scared to go down there. With nothing else to do you head into the cellar to brave the ghosts and rodents.
One of the undead you kill in the cellar drops a Book of the Glorious Legion. Make sure to pick this up.
With the Book of the Glorious Legion in your possession, you are free to head back to the surface to tell the merchant that his cellar is once again safe from hostile forces. He'll graciously reward you for your kindness.
Thank you for your help. Take this gold, and this bottle of red here is quite nice too.