The title Emmanuelle 4 is explicit in letting viewers know how many Emmanuelles have gone before, and the film is just as explicit in its bid for sexsational scenes, but as in other films of this type, the profit motive is implicit. The storyline is more of a story thread, wherein the preceding Emmanuelle (Sylvia Kristel) decides to go to Brazil for total plastic surgery in order to escape an ex-lover (Patrick Bauchau). She emerges as a blond with a new, virginal body (Mia Nygren) and proceeds to go after the very lover she wanted to avoid in the first place. Untouched by the later fear of AIDS, the new Emmanuelle has sex with almost anyone who strikes her fancy, male or female, and when no one is available, that does not stop her either.
~ Eleanor Mannikka, All Movie Guide