Several friends travel to Sweden to study as anthropologists a summer festival that is held every ninety years in the remote hometown of one of them. What begins as a dream vacation in a place where the sun never sets, gradually turns into a dark nightmare as the mysterious inhabitants invite them to participate in their disturbing festive activities.

A group of directionless, bored, drug-using teenagers get involved in a cult, resulting in a murder.

A young girl relates what happened during her first LSD trip, when – among other things – her food began talking to her.

CBS TV news special hosted by Harry Reasoner explores the way-out world of the Hippies and the Haight-Ashbury psychedelic 1960s LSD scene. Footage of LSDs users experiencing bummer trips. The Diggers, the Oracle and cool street and Golden Gate Park scenes with hippies tripping out. The Grateful Dead are interviewed and are shown performing "Dancin' in the Streets" on a flatbed truck in Golden Gate Park. The Hippie Temptation!

In the early 1970s, a group of young volunteers, the Free Youth Clinic of Winnipeg, operated a "crisis bus" to rescue young people experiencing bad drug trips, usually from LSD.