In Emmanuelle in Space 3: A Lesson in Love, Emmanuelle, a beautiful alien from the planet Terra, is sent on a mission to Earth. Her task is to teach one of her fellow female aliens about the human concept of love and sexuality. The female alien is struggling to understand these concepts and desires to learn about them before returning to her home planet.
Emmanuelle escorts her to Earth, where she shows her the various ways in which humans express love and desire, including romantic relationships and sexual intimacy. As they explore this new world together, Emmanuelle also guides the alien towards exploring her own sexuality and desires.
The movie features a series of sensual and erotic scenes as Emmanuelle and the female alien explore their own desires and the concept of love. Along the way, they encounter various human characters, including a man who becomes enamored with Emmanuelle and a woman who is intrigued by the alien's otherworldly beauty.
Overall, Emmanuelle in Space 3: A Lesson in Love is a sensual and erotic exploration of love and sexuality, with an otherworldly twist that adds an extra layer of intrigue and excitement to the story.