About Forbidden passion blazes between a brother and sister in this sexually delirious, rock 'n' roll romance. This film spins a deliciously dark adult fairy tale in which the relationship between aristocratic siblings Marguerite and Julien goes from playfully flirtatious to passionately erotic-an affair that tests the limits of what society will accept. A provocative fable about what we're willing to risk for love, this dream is a one-of-a-kind romance that transcends time, reason, and moral boundaries