In the film's first portion, filmed in Black-and-white, Dr. Sergio, a psychiatrist, appears on a television program on a panel with three other contemporary psychiatrists after he claims to have conducted experiments on four volunteer drug addicts with LSD in order to investigate his claim that sexual perversion is caused by use of illegal drugs. As evidence, he presents a series of documented accounts of drug use which led to lewd and bizarre sexual acts. Marins appears (as himself) on the panel with the psychiatrists as some type of expert on the subject of depravity. During the program, Dr. Sergio recounts the experiment to his colleagues on the panel, who reject his claims.