The door has been closed for many weeks. A teenager has locked himself in - shutting out a helpless father, mother and sister. In Japan, youths like him have already been given a name: Hikikomori (the secluded). The phenomenon is also beginning to spread throughout the Western world. This is all the family has been able to find out. All they can do is stand in front of the locked door and ask, beg, implore, throw tantrums, despair, accuse, ignore and hope. All the while, the door increasingly becomes a mirror of their own lives.

An eleven-year-old Turkish boy, two young men from a small town, and a cuckolded policeman from the sticks all find their way to Berlin on May Day, where, in the district of Kreuzberg, emotions come to the boil every year.

Heinz and Erich are simulating an apartment viewing in prison. Erich is about to be released and Heinz is helping with the preparations. The two are longtime cellmates and friends, and maybe even a little bit more.

Johnny is a gambler and gangster who works as a confidential informant. But he is threatened with being exposed.