Sarah (Irene Dunne) is trapped in a marriage to the drunken, abusive Tono (Nils Asther). Gordon (Clive Brook), a droll and depressed lawyer, is lost in a loveless marriage to the aloof Catherine (Lorraine MacLean). One night, Sarah and Gordon meet by chance in Paris. They slowly fall for each other, not from excessive passion but out of their shared loneliness, sadness and yearning for human warmth. Society, however, calls their love adultery, which makes it difficult to continue.