The preparation, in Hungary, of the assassination in Marseilles of King Alexander of Yugoslavia in 1934.

A young man with an interest in ornithology arrives to study the work of falcons and their human trainers. The head falconer is a cold and heartless man who obstinately demands perfection from everyone around him. His work is his life, and he doesn't care if his girlfriend makes love to other men. The young man observes all he can before leaving behind the potentially inhuman situation for brighter horizons.