In a final attempt to overcome lifelong suicidal depression, a man isolates himself in a remote mountain cabin and consumes a massive dose of psilocybin. As the trip takes hold, he descends into a realm of unspeakable visions, reliving trauma, encountering lost souls, and ultimately facing an ancient entity assigned to his destruction. To survive, he must possess the very demon sent to destroy him—and awaken with no reflection of who he used to be.