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.
as X.T.
as Eleonore
as Alien Girl
as George Schaller
as Girl in the cinema
as Boy in the cinema
as Dr. Erwin Haberlund
as Dr. Kellstrom