Jezebel is about Julie Marsden (Bette Davis) who is engaged to Preston Dillard (Henry Fonda). She is a spoiled, wealthy young woman (perhaps a teenager), living in 1852 New Orleans. From the take of things, she is an orphan as she lives with her Aunt. She is spoiled, but also complex. She definitely has an adventurous side as her first appearance on screen is her riding a horse that will only obey her commands. She is late to her own party and has little regard for tradition. She walks into her own party in riding cloths while everyone else is dressed for a Southern party. And when it comes to Preston, she wants to make sure she has him around her finger. The two of them are supposed to go to a fitting for the Olympus Ball, but he is busy in a bank meeting. She walks right into the bank (which based on the looks of the customers is taboo) and demands that Preston come and talk to her. He does, but tells her that he simply can't go with her. In a bit of fury, she goes to the fitting and instead of buying the traditional white dress, she goes with a red dress.
Her family as well as Preston are shocked that she wants to wear a red dress to the Olympus Ball, but she insists that she wishes to go in red. When they arrive at the ballroom, the crowd immediately rejects the couple. When on the dance floor, they are soon left alone as the rest of the couples move to the side. Julie sees that she's made a serious blunder and begs Preston to take her home, but he refuses, figuring -- I suppose -- that this is a way to teach Julie to be less spoiled. The Olympus Ball is more than just a social blunder, it also ends the engagement.
Preston moves to the North (business related to the bank) and Julie remains secluded in her home, avoiding all contact. The movie shifts to 1853 and there is the start of a Yellow Fever outbreak. Julie and her aunt move to Halcyon Plantation, which seems to be her property via her deceased parents. Preston also returns to the city and a homecoming party is set at Halcyon Planation. A group of friends show up, including Buck Cantrell (George Brent) who is a rejected suiter of Julie's. The reason for the party goes beyond a homecoming. It is meant as a way for Julie to win back Preston's heart. Unknown to her, Preston got married and he brings his wife, Amy (Margaret Lindsay) to the party.