Laura Giglio and Debbie D play two roommates, Serena and Rebecca, respectively. Prior to going to a party, Serena shows Rebecca a “hypnotic cube” that she picked up at a flea market. Playing around, Rebecca agrees to be hypnotized. But once Rebecca is under her control, Serena has revenge on her mind. Serena blames Rebecca for stealing her boyfriend away from her. After forcing her “friend” to do a number of embarrassing things, Serena plants a post-hypnotic suggestion that when Rebecca hears the phone ring, she will take her gun out of the desk drawer, put it in her mouth, and pull the trigger. But things aren´t quite what they seem and Serena has the tables turned on her. Rebecca then has her revenge when she forces Serena to kiss her feet, beg like a dog, and experience being suffocated and burned alive! However, a third party enters the picture, that of Rebecca’s psychiatrist. What will he do when learns about the “hypnotic cube”?