A secret terrorist group infiltrates the household of a government official"s son, with a view to spying on the father and, ultimately, assassinating him. But the young man entrusted with the task - an ailing, world-weary "nobody" - seized with the purposelessness of life and a sense of his own impending death, gradually becomes disillusioned with his mission, and decides to embark on a new path which will lead him to tragedy.