In this provocative family therapy session, Dr. Alexis Malone, a seductive American psychologist, guides her inexperienced Aussie stepbrother, Spikey Dee, through the art of dominance and submission. Using her stepsister, Kenzie Love, as a willing subject, Dr. Malone teaches Spikey how to assert his authority, starting with a raw, passionate blowjob lesson. As the siblings explore their boundaries, their therapy sessions devolve into a heated threesome, filled with intense, taboo passion and forbidden desires.