At a meeting of that venerable organization of mice, the Prisoners' Aid Society, it is decided that the most important item on the autumn program is the rescue of a Norwegian poet from the dungeon of the Black castle. The first step, the society agrees is to find a linguist who knows not only the universal mouse language but Norwegian as well. The fabulous Miss Bianca is the obvious choice to secure such a mouse, living as she does at the Embassy and being free to travel in the Diplomatic Bag.