Desc: Gram. Kilogram. Tona.: Directed by Janko Baljak. With Viseslav Ajdanic, Goran Petrovic, Dragan Milivojevic, Ruzica Veselinovic. Trade in drugs in Serbia (Balkan). Thirteen young people we spoke to, who are serving their sentences for this crime, are telling a story about the entrance into that vicious circle, and about how difficult is to find the way out of it.