A man from our world (a Scipling) is decieved into entering the world of the Alfar (a land of magic) to retrieve a sword, mend a broken pentacle, and get a mystic grindstone in order to lift a curse and free the day people. To do so he must pose as the man who brought this plague of misery onto the day people. The viking reluctantly agrees to help, and eventually gets drawn into the action and desires to help. Liefr is the everyman of the tale, who is really a brave warrior, but it is his "relative" Thurid who does all the work of the novel.
The Troll's Grindstone is a charming fantasy adventure complete with a magical quest that takes the characters on a journey. The characters' interactions, the building of unlikely friendships, and the hero's true purity of heart make it a very satisfying and fun read. It is the first in a series.