The maniac chooses an assistant from among the students to be an assistant in his barbaric experiments. One of the girls is stripped off, and the entire class is shown the peculiarities of the female physique and the urinary system. The assistant realizes in time that the best way to save his own skin is to become the maniac's obedient dog. At his master's command, he undresses another girl, and as an incentive, the teacher forces her to give the assistant a blow job.
