Chaos descends on Moscow as the French army attacks the city. The Rostovs realise they are in danger and flee for their lives. Natasha finds herself with an unexpected travelling companion, and sees a last chance to make amends. Sonya is asked by the countess to make a sacrifice for her family. Traumatised by his experiences on the battlefield, Pierre resolves to stay behind and fight the invaders, and as he struggles through a hard winter, the scenes of horror and kindness he witnesses change his outlook on life. Last in the series.