Featuring commentary from surviving participants, as well as other filmmakers and critics, this documentary chronicles the career of director John Boorman and the tumultuous production of his film Exorcist II: The Heretic, exploring its critical and commercial failure, how it changed the industry, and the importance of risk-taking in art.

Gabriel is a young, aspiring musical composer whose life seems stuck in the First Act. When his new musical number gets a critical reception, a theatre colleague, Perry, tells Gabriel that he needs to get a life before he can write about one – so he heads straight for his local gay bar.