A war veteran's battle with PTSD leads him to the world of psychedelics, where ancient remedies and cutting edge science create medicines that could change the way we treat addiction and mental health.

The horrors he witnessed in Afghanistan haunt Patrick Moulden to this day. Suffering from extreme PTSD, he has tried modern medicines like antidepressants, sleep medications and pills to help with anxiety. Now, he’s trying an ancient psychedelic plant called Iboga to help treat his mental anguish.

With access to pioneering and controversial medical practitioners, and scientists studying the effects of psycho-active substances, this doc gets to the heart of rising calls to legalise psychedelics in medicine.