The first part of the film explores the chemical properties of the marijuana plant, and the second part explains, in psychological and physiological terms, the ways in which marijuana affects the human body. The third part takes an objective look at professional and private arguments for and against marijuana use and its legalization. The concluding part of the film focuses on the social aspects of the drug, exploring why people use it, the possibilities of psychological addiction, and how juveniles can avoid pressure from their peers to experiment with marijuana. The film focuses on helping juveniles make careful and thoughtful decisions about marijuana use. A teacher's guide and library kit accompany the film. (Publisher abstract modified)