In this hectic farce, Louis Aubinard (Bob Hoskins) is at the bottom of every totem pole he's ever come near, a nebbish and unattractive man who makes a poor living as a photographer of religious tableaux. His sister doesn't respect him and deliberately cooks awful food just to makes his life more miserable. At work, he is in danger of losing his job if he can't find a suitable model for a Christ-on-the-cross photo. One of his friends (Jean-Pierre Cassel) asks him to fill in for him on a movie project, and without knowing what he's being asked to do, Louis agrees to help out. He is astonished to discover that he is to provide the voiced-over cries of orgasmic delight for a porn movie. His fellow dubber is a lovely woman named Sybil (Natasha Richardson), and together, they voice a world-shaking sexual climax for the movie. Sybil then asks the hapless Louis to do a favor for her, and once again, he agrees. He meets the actress' boyfriend (Jeff Goldblum) as he is being released from jail and simultaneously finds his model for the troublesome photo. Things become particularly frenetic when the addle-pated ex-con takes his holy image too much to heart and begins trying to work miracles.