Gay Dillingham's documentary follows the lives of the title's social revolutionaries together and apart, as they helped to found the counterculture and brought psychedelia and Eastern philosophies to the masses in the 1960s. A running theme is spiritual teacher Dass's homosexuality, which many readers of his 1971 classic Be Here Now are unaware of to this day, and Dying to Know also presents an even-handed look at the rise of psilocybin ('shrooms) and LSD, arguing for their long-overdue decriminalization.