Winslow was not an adventurer like his grandfather the great Joe Quinsby, by any stretch of the imagination. But when a strange creature called a Firefly lands on his doorstep with news that Grampa Joe is in trouble, Winslow must hit the trail on a journey to the magical land of Mithandriel. Rugged cowboys, plucky companions, an eccentric mountain man, and a myriad of strange creatures are all in store in this fantastical tale.