The life and work of Konrado Lorenz are closely connected to the fact that he is on familia term with wild birds and animals. When he was eight years old, he oserved a newly born duckling and discovered by chance the phenomena of "imprinting". Later he studied and found the differences existing between inborn and a acquired behaviour. The film not only shows the origns of a science but also the way in which the stimuli derived from a natural environment can influence the spiritual development of a child.