A young Muskox named Gunnar is content with his life in Pen Haven. He gets all the food he desires and is protected from the devilish and opportunistic wolf packs by his human Keepers. Life could not be better. He thinks so, as does his friend and mentor Chinook. An elder and wise Muskox. One day, a new Muskox arrives with views completely contradictory to Chinooks and her enlightening opinions set young Gunnar's life on a new path.