The aliens are already on Earth! However, they have sent only a vanguard. X.T. is the name of the alien, which is to explore the planet earth. In particular, he is to explore the strange earthly habit called sex.

An over-the-hill journalist who now works at a tabloid smells a new story: He aims to discover the background behind the mysterious Michelle, a top star of the photo industry. Nobody knows where she comes from, where and how she lives. She never gives any interviews, but simply makes her photos and disappears without a trace. Together with his photographer, the journalist searches for clues which lead him quickly into trouble.