“Peaking: Psychedelics and the Pursuit of Happiness” is a feature documentary that explores all the major psychedelics, not just by explaining how they work medicinally, but by taking viewers inside dosing rooms for extremely rare looks at the remarkable power, emotion, and speed of psychedelic healing in action: from pro athletes repairing brain damage from concussions, to combat veterans finding relief from suicidal despair, to a woman breaking free from opioid addiction, to survivors of the Nova Music Festival massacre who say being on psychedelics during the attack shielded them from developing mental trauma.