The young daughter of a US Senator is drawn into a hippie "free love" cult called "The Children of Light" by the blond boyfriend of the cult's leader, a mysterious and beautiful Asian woman. The cult turns out to be not quite the "free" love community it presents itself to be.
When Emanuelle (Gemser) arrives in the small Italian village heads start turning and eyes start popping. All males in the town are falling all over themselves trying to get a look (or a feel) of the new doctor. One in particular is the fiancee of the mayor's daughter. A kind of "Hatfield's and McCoy's" feud with a political twist has been going on and the young lovers' families are, unfortunately, on opposite sides.
An English soldier (Cliver) returns home from the Zulu war with the daughter of a tribal king (Gemser) as his slave (a gift that he was given for "saving" the kings life). The spoils of war, ya know? While he's been gone, his wife has been having an affair with the female housekeeper (Belle). Not at all pleased with being a slave, the Ebony princess notices the mistress of the house engaging in a quick bit of foreplay with the housekeeper and plots her revenge starting with the seduction of the mistress. Jealousy spreads like wildfire and before you know it, she has turned the household into a lustful frenzy of sex and hatred. I can't give away too much more or it would ruin the story, but there are plenty of little twists along the way.
Emmanuelle returns to her husband in Hong Kong and proceeds to have several extramarital affairs – with his knowledge, of course. Her husband's lover and American guest are both very puzzled by their openness.
While hanging around Africa for some reason, intrepid reporter/photographer "Emanuelle" (Laura Gemser) stumbles across a white slavery operation (OK, so it doesn't exactly make sense to have a WHITE slavery operation in Africa where hardly anyone is white, but oh well). After hiding and taking lots of photos of naked, barely legal girls being paraded back and forth in front of potential "buyers", "Emanuelle" has a run-in with the vicious male transvestite who's running the operation.
Emanuelle goes undercover into a prison to expose the corrupted officials who are brutalizing the inmates. Emanuelle is shocked by the horrors and humiliation the prisoners are subjected to, but when her true identity is discovered, she finds herself at the receiving end.