In Saint Petersburg of 1805, Pierre Bezukhov, the illegitimate son of a rich nobleman, is introduced to high society. His friend, Prince Andrei Bolkonsky, joins the Imperial Russian Army as aide-de-camp of General Mikhail Kutuzov in the War of the Third Coalition against Napoleon. As Pierre's father recognizes him, Pierre attracts the attention of Hélène Kuragina and marries her, only to learn through rumor that she has been unfaithful and slept with Fyodor Dolokhov, an intimate of Hélène's brother Anatole. Meanwhile, Andrei takes part in the failed campaign in Austria, where he witnesses the Battle of Schöngrabern and the Battle of Austerlitz, is badly wounded and mistaken for dead. He returns to his father's estate just in time to witness his wife Lisa die during childbirth.