The evils of marijuana addiction are "chillingly detailed" in this cult classic, which is narrated by a high school principle who declares, "Something must be done to wipe out this ghastly menace!" A case study of all-American high school kids Bill and Mary highlights the danger of marijuana use when the teens change from tennis-playing, iced tea-drinkers to fiendish, promiscuous, dope addicts after sampling one joint.

Naturally, the marijuana users in the film play the piano, dance, and laugh uncontrollably - all surefire signs of "devil weed" use. Bill hallucinates and faints one fateful evening as Mary is accidentally shot; then, more deaths occur before the inevitable mental institution scenes which serve to underscore the horrors of smoking reefer.