Philosophical reflection on the fragility of human existence. Sissine, a forty-year-old writer, takes the suburban train. He finds himself among strange passengers, some of whom remind him of writers: Chekhov, Tolstoy, Dostoyevsky, Kuprin. Surrealist visions arise in Sissine's imagination, secret desires, fears, anxieties. Love, career, life itself, seem stupid and meaningless to him.