UK author Simon G. Powell takes a look at the resurgence of scientific interest in psilocybin (the active ingredient of psychedelic mushrooms), in particular the work being done by the Heffter Research Institute. Archive footage is shown of LSD research in the 1950s and 1960s, and the anti-psychedelic media propaganda that was eventually used to quell the growing popularity of recreational LSD use. Includes exclusive interview material with Dennis McKenna, Roland Griffiths, David Nichols, and Bill Linton (all of the Heffter) along with archive clips of Timothy Leary. The film explores the importance of the psilocybin experience and the pressing issue of extending its legitimate use toward healthy people. Special attention is given to the potential eco-psychological impact of psilocybin.