Once upon a time there was a girl called Helene. And because her father was king and her mother queen, she had to be a princess.

Seizing poisonous snakes or rescuing an environmental activist from a threatened tree—Mainz bailiff Billy Kuckuck handles these tasks with enthusiasm and competence. But cases such as the eviction of 80-year-old Margot Kühlborn, who has to move out of her familiar apartment after 50 years due to a personal use lawsuit, do not shake her so easily.

Felix is 20 and well on his way to becoming a conscientious police officer, but shortly before his exam he is deployed as a police officer at a demonstration against German deportation practices, and he meets Ra, an Indian woman, on the other side.