Tensions boil over between step-siblings Chanel and her brother as they argue over their mother's attention. Cornered, they resort to blackmail, using their mother's hidden lesbian past to keep her in line. Their plan backfires when she proposes a twisted solution: a threesome to settle their differences. Chanel, shocked but intrigued, agrees. They strip down, exploring each other's bodies with tentative, angry touches, their mother guiding them. Chanel's brother enters her from behind, while Mom claims her mouth, their rhythm syncopated with their earlier arguments.