Something is causing animals to become as intelligent as human beings. Stories from around the world tell of actions too well coordinated to be left to ordinary instinct; they seem to have been carefully planned. There are rumors of lower animals actually speaking! The number of such stories had grown every year, so it certainly deserves strong attention and investigation. Six ambitious scientists around the globe are undertaking this, unkwn to each other at first. They will use both similar and different tactics as they do their work and much will be learned by and from them. What are they headed toward?