Ian Gray and his assistant Karen are researching the origin of vision and the appearance of the eye in living species, while their friend Kenny is building a world database of irises, each iris being specific to an individual. By discovering the gene and its mutation responsible for vision, Ian brings a decisive stone to the theory of evolution and believes to deal an equally decisive blow to the theory of intelligent design and beliefs in a god. But now, by consulting the database, he discovers that living people have the same irises as people who died at the time of their birth.
