Mystical ecstasy, the intense states reported by nuns, meditators, and other contemplatives, gets a clinical look from a research team at the University of Montreal. Director Isabelle Raynauld follows their experiments as they scan and interview subjects experiencing these states, testing whether the euphoria mystics describe leaves measurable traces in the brain and body. Neuroscientists and spirituality researchers explain what the scans show, and the film links the findings to concrete medical claims: mystical or meditative states used alongside conventional treatment to ease depression and speed physical recovery. Rather than treating the spiritual and the scientific as opposites, the film puts them in the same room, with lab footage and brain imaging sitting next to accounts of religious rapture. The film is in French with English subtitles. It stays close to the University of Montreal study throughout, using it as the spine for a broader question the researchers themselves are asking: what mystical experience actually does to the people who have it, physically and mentally, once the ecstasy fades.