A New York University professor returns from a rescue mission to the Amazon rainforest with the footage shot by a lost team of documentarians who were making a film about the area's local cannibal tribes.
The escapades of a trio of stoner anti-establishment characters and their cat who wake up from a 50-year nap after smoking a magical strain of weed in 1969, and must adjust to life with a new family in present-day San Francisco.