It's a drama about sexual fantasy and control set in December in modern New York City. The family in question is 50-ish high-powered executive Romy Mathis (Nicole Kidman), her Broadway play director husband, Jacob (Antonio Banderas), and their two teenage daughters, Isabel (Esther McGregor) and Nora (Vaughan Reilly). Romy is highly successful and innovative at her job but sexually unsatisfied in her marriage.
Romy meets Samuel (Harris Dickinson), a 25-ish intern at her company, who she is attracted to because of his assertive behavior. His behavior and her fantasies collide in a relationship with predictable problems, including Samuel also dating Romy's assistant, Esme (Sophie Wilde). After things get out of control, there is climactic conflict and resolution.
"Babygirl" is a virtuoso Nicole Kidman performance. That's the best that I can say for the film. Harris Dickinson is adequate as a manipulative jerk, as is Antonio Banderas as a preoccupied husband. Esther McGregor has a nice little subplot in the film. "Babygirl" is no feminist movie, and there are no attractive characters. The film's ending is superficial and ludicrous. The cinematography is creative at points, and the sex scenes are not graphic. However, any "truth" in "Babygirl" is lost in the unrealistic ending.