Two men in a mental asylum have a heated discussion about the world, humans and the meaning of life, using a blackboard to illustrate their point. The doctor-looking one supports an ideal view of what life and the world are focusing on the good qualities of human nature. The other, an insane-looking man, focuses on the bad things that make of our world what it and on the abjection of the human spirit. Who is right? Who is wrong? Who is who?