Mrs. Dalloway follows a single day in the life of Clarissa Dalloway, a wealthy woman in 1920s London, as she prepares for a party. The story flows between her memories and the thoughts of other people she encounters, including a shell-shocked war veteran named Septimus Warren Smith. It explores how people are connected by shared moments and hidden feelings, even when they seem to live very separate lives. The book asks big questions about what makes life meaningful and how we carry our past with us.