Acorn, the mouse, was not really dressed for a misadventure. He certainly did not pack his toiletries, but he had no real choice in the matter. His old friend, Bear, was running away, heading into the unknown beyond Brightwing's border. Like a good friend, Acorn followed him into a world of shadow and sorrow-a cold and barren country where danger lurks at every bend in the path and where the only way home is through a river of tears.