31 year-old Tristan remembers the time when he was 15 and had just hit puberty. But he is not alone in this, he is with a large group of friends: Specki, a fat kid who is always stuffing himself, Streusel, a cheeky boy covered with spots, Tümai, a pretty Turkish girl, Kerstin, best friend of Tümai and very sporty, Elrond, with a heavy stutter, but regardless extremely popular and good looking, Lars and Simone, so far the only couple in the class who spend most of their time smooching and Long Jana, a girl who is at least 6 foot tall and extremely skinny.

17-year-old Guido suffers since his early childhood from neurodermatitis. After being taken to the hospital due to a heavy attack, he starts to question his personal and familiar environment and discovers that his parents’ relationship – which he assumed to be happy and sound – is built on lies. Unable to deal with this disappointment, he flees from it and moves in with his older brother and his roommates...

Marko Stemper, 19 years old, comes from a disadvantaged background and works as a window cleaner. His father, an alcoholic, tyrannizes the whole family, so Marko's only joy in life is boxing. As he is the most promising talent in his club, Gerd Hermsbach, a local demimonde boss, offers him the opportunity to become a professional. Marko accepts, but has to pay a high price...