Harald - Der Chaot aus dem Weltall (1997)

The alien Harald has booked a package holiday on Earth and is trying to find shelter at science fiction editor Rita Reichmans flat. Her admirer Frido Lipinski so not amused because Rita seems to succumb to Haralds charm. But Harald also has quite a few problems in learning the rules of conduct of the earthlings and that he cannot lie, complicates the situation.