The beginning was enough for me. Typical german movie plot:
It rings at the door.
"I need this and this and that for a pancake."
"uhhhh...um...ok."
"I also use your kitchen and make a big mess"
"Uhhh, well...ok"
"And I'll move in with you bag and baggage and turn everything upside down."
"Well, ummmm...okay"
"You don't know me, except that I'm a kangaroo and a communist, but you probably don't care, do you?"
"Yeah, um...ok"
Pretty stupid and far-fetched, right?? Welcome to the world of german comedies.
I don't know if people in Berlin would actually react that way, but any normal person would probably have kicked such a person out onto the street. Kangaroo or not.