Lily Bart, a single woman in New York high society, struggles with financial insecurity while relying on her beauty and charm to secure a wealthy marriage. She pursues a match with Percy Gryce to stabilize her future, but an emotional connection with Lawrence Selden shakes her resolve. At the Bellomont house party, Lily’s ambition and vulnerability are both exposed in the social spotlight. Simon Rosedale enters the scene, recognizing her weaknesses and treating her as a social investment. When Selden departs for Europe, Lily is left increasingly isolated and uncertain.